Icom IC-910H Instruction Manual

i910H From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

CAREFULLY before attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating in- structions for the IC-910H. EXPLICIT DEFINITIONS i R WARNING HIGH VOLTAGE! NEVER at- tach an antenna or internal antenna connector during transmission. This may result in an electrical shock or burn. R NEVER apply AC to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVER apply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVER let metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. RNEVER expose the transceiver to rain, snow or any liquids. AVOID using or placing the transceiver in areas with temperatures below –10°C (+14°F) or above +60°C (+140°F). Be aware that temperatures on a vehicle’s dashboard can exceed 80°C (+176°F), resulting in per- manent damage to the transceiver if left there for ex- tended periods. AVOID placing the transceiver in excessively dusty en- vironments or in direct sunlight. AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. Place unit in a secure place to avoid inadvertent use by children. During mobile operation, DO NOT operate the trans- ceiver without running the vehicle’s engine. When the transceiver power is ON and your vehicle’s engine is OFF, the vehicle’s battery will soon become ex- hausted. Make sure the transceiver power is OFF before start- ing the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the mag- netic navigation compass to prevent erroneous indica- tions. BE CAREFUL! The heatsink will become hot when operating the transceiver continuously for long periods. BE CAREFUL! If a linear amplifier is connected, set the transceiver’s RF output power to less than the lin- ear amplifier’s maximum input level, otherwise, the lin- ear amplifier will be damaged. Use Icom microphones only (supplied or optional). Other manufacturer’s microphones have different pin assignments, and connection to the IC-910H may damage the transceiver. PRECAUTIONS WORD R WARNING CAUTION NOTE DEFINITION Personal injury, fire hazard or electric shock may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. Equipment damage may occur. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Qty. q DC power cable (OPC-657A) ............................ 1 w Hand microphone (HM-12) ................................ 1 e Spare fuses (FGB 30 A) .................................... 2 r Spare fuse (FGB 4 A) ........................................ 1 1 1 TABLE OF CONTENTS q w e r IMPORTANT ........................................ i EXPLICIT DEFINITIONS ..................... i PRECAUTIONS ................................... i 1 TABLE OF CONTENTS ................ 1 2 PANEL DESCRIPTION ........... 2–13 I Front panel ..................................... 2 I Function display ........................... 10 I Rear panel .................................... 12 3 INSTALLATION AND CONNECTIONS ................... 14–17 I Unpacking .................................... 14 I Grounding ..................................... 14 I Selecting a location ...................... 14 I Antenna connection ...................... 14 I Required connections ................... 15 I Advanced connections ................. 16 I Power supply connections ............ 17 4 BASIC OPERATION ............. 18–25 I Initial settings ................................ 18 I When first applying power (CPU resetting) ............................. 18 I MAIN and SUB bands .................. 19 I Operating band selection ............. 20 I VFO description ............................ 21 I Frequency setting ......................... 22 I SUB band OFF ............................. 24 I SUB tuning dial ............................. 24 I Dial lock function .......................... 25 5 RECEIVE AND TRANSMIT .. 26–39 I Functions for receive .................... 26 I RIT function .................................. 27 I IF shift function ............................. 27 I AGC time constant ....................... 28 I AFC function ................................. 28 I FM center indicator ....................... 28 I Attenuator ..................................... 29 I Simple band scope ....................... 29 I Noise blanker ............................... 30 I Tone squelch operation ................ 30 I Optional DSP functions ................ 31 I Functions for transmit ................... 32 I Transmit via microphone .............. 32 I Indications during transmit ........... 32 I FM mode operation ...................... 33 I VOX operation .............................. 33 I Repeater operation ....................... 34 I SSB mode operation .................... 36 I Speech compressor ..................... 36 I Split frequency operation .............. 37 I Full duplex operation .................... 37 I Connections for CW ..................... 38 I CW mode operation ..................... 38 6 MEMORY OPERATION ........ 40–44 I Memory channels ......................... 40 I Operation on a memory channel .. 40 I Programming in VFO mode .......... 41 I Programming in memory mode .... 41 I Blank channels ............................. 42 I Frequency transferring ................. 42 I Memory clearing ........................... 43 I Call channels ................................ 43 I Memo pads ................................... 44 7 SCANS ................................. 45–47 I Scan types .................................... 45 I Preparation ................................... 45 I Programmed scan operation ........ 46 I Memory scan operation ................ 46 I Memory select scan ..................... 47 I Tone scan ..................................... 47 8 SATELLITE OPERATION ..... 48–51 I Satellite communications outline .. 48 I Satellite notes ............................... 48 I Entering into the satellite mode .... 48 I Setting the satellite VFO ............... 49 I Tracking selection ......................... 49 I Preparation ................................... 50 I Satellite operation ......................... 51 I Satellite memory ........................... 51 9 DATA COMMUNICATION ..... 52–54 I Functions for AFSK ...................... 52 I Connections for AFSK .................. 52 I Operating mode notes .................. 53 I Operating frequency notes ........... 53 I AFSK operation ............................ 53 I Setting the ACC socket ................ 54 10 SET MODE ........................... 55–69 I Set mode description .................... 55 I General set mode ......................... 56 I FM set mode ................................ 60 I SSB/CW set mode ....................... 62 I Scan set mode ............................. 64 I Memo pad set mode ..................... 64 I Compressor set mode .................. 64 I VOX set mode .............................. 65 I Attenuator set mode ..................... 65 I Transmit set mode ........................ 66 I NR set mode ................................ 67 I SWP set mode ............................. 67 I RIT/SHIFT set mode .................... 68 I Speech set mode ......................... 69 11 OPTION INSTALLATIONS ... 70–76 I Internal view ................................. 70 I Opening the transceiver’s case .... 71 I UT-102 VOICE SYNTHESIZER UNIT .............................................. 71 I UT-106 DSP UNIT .......................... 72 I UX-910 1200 MHz BAND UNIT ........ 73 I CR-293 HIGH STABILITY CRYSTAL UNIT .............................................. 74 I FL-132/FL-133 CW NARROW FILTER ........................................... 75 12 MAINTENANCE ................... 76–77 I Troubleshooting ............................ 76 I Fuse replacement ......................... 77 I CPU resetting ............................... 77 13 CONTROL COMMAND ........ 78–79 I Remote jack (CI-V) information .... 78 14 SPECIFICATIONS ....................... 80 15 OPTIONS ..................................... 81 16 INSTALLATION NOTES ....... 82–83 From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

q POWER SWITCH [POWER] ➥Push momentarily to turn power ON. ➥Push for 2 sec. to turn power OFF. w TRANSMIT SWITCH [TRANSMIT] Push to select transmitting or receiving. e COMPRESSION SWITCH [COMP] (p. 36) Push to switch the speech compressor function ON and OFF. •The speech compressor increases average RF output power, improving signal strength and readability in SSB. r VOX SWITCH [VOX] (p. 33) Push to switch the VOX function ON and OFF. •The VOX (Voice-Operated Transmission) function tog- gles between transmit and receive with your voice. This function provides an opportunity to input log entries into your computer, etc., while operating. t HEADPHONE JACK [PHONES] Accepts headphones. •Output power: 5 mW with 8–16 Ωload. •When headphones are connected, the internal speaker or connected external speaker does not function. •The MAIN and SUB band audio can be mixed or sepa- rated when using stereo headphones according to set mode settings. (p. 57) y MICROPHONE CONNECTOR [MIC] Accepts the supplied or optional microphone. •See p. 81 for appropriate microphones. •See p. 15 for microphone connector information. u MIC GAIN CONTROL [MIC GAIN] Adjusts microphone input gain. ✔How to set the microphone gain. Set the [MIC] control so that the [MAIN]/[SUB] indicator (ALC indicator) some times lights brighter during normal voice transmission in SSB mode. i RF POWER CONTROL [RF PWR] Continuously varies the RF output power from min- imum to maximum. 144 MHz band 5–100 W 430(440) MHz band 5–75 W 1200 MHz band 1–10 W (optional UX-910) RF PWR Increases Decreases MIC GAIN Recommended level for an Icom microphone Increases Decreases 2 2 PANEL DESCRIPTION q o !0 !1 !2 !3 w e r t y u i From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

➥Lights green while the squelch is opened or a sig- nal is received on the MAIN band; lights red while transmitting on the MAIN band. •While transmitting, the indicator also shows ALC con- dition. Brightness increases more than usual when the ALC function is activated. ➥Flashes when an off-frequency signal is received and the FM center detector is activated. (p. 28) !0 RF GAIN CONTROL/SQUELCH CONTROL [RF/SQL] (outer control) Adjusts the RF gain and squelch threshold level for the MAIN band. The squelch removes noise output from the speaker (closed condition) when no signal is received. •The squelch is particularly effective for FM. It is also available for other modes. •12 to 13 o’clock position is recommended for any setting of the [RF/SQL] control. •The squelch threshold position for SSB/CW mode can be set from 12 or 13 o’clock position in SSB/CW set mode. (p. 62) •The control can be set as ‘Auto’ (RF gain control in SSB and CW; squelch control in FM) or squelch control (RF gain is fixed at maximum) in set mode as follows. (p. 56) •When setting as RF gain/squelch control •When functioning as RF gain control (Squelch is fixed open; SSB, CW only) •When functioning as squelch control (RF gain is fixed at maximum.) !1 AF CONTROL [AF] (inner control) Varies the audio output level from the speaker for the MAIN band. !2 SUB BAND INDICATOR [SUB] Lights green while the squelch is opened or a signal is received on the SUB band; lights red while trans- mitting in satellite operation. !3 RF GAIN CONTROL/SQUELCH CONTROL [RF/SQL] (outer control) Adjusts the RF gain and squelch threshold level for the SUB band. The squelch removes noise output from the speaker (closed condition) when no signal is received. AF RF/SQL No audio output Max. audio output Decreases Increases Squelch is open. S-meter squelch S-meter squelch threshold Noise squelch threshold Shallow Deep Noise squelch Minimum RF gain Adjustable range Maximum RF gain Recommended level RF gain adjustable range (SSB, CW modes) Maximum RF gain S-meter squelch Noise squelch (FM mode) Squelch is open. MODE SSB, CW FM AUTO RF GAIN SQL SQL SET MODE SETTING SQL SQL RF GAIN + SQL RF GAIN + SQL SQL 3 2 PANEL DESCRIPTION From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Front panel (continued) !4 AF CONTROL [AF] (inner control) Varies the audio output level from the speaker for the SUB band. !5 SET•MENU SWITCH [SET•MENU] (p. 55) ➥Push this switch then one of [FM], [SSB/CW], [RIT], [SCAN], [NR], [TRANS- MIT], [COMP], [VOX], [ATT], [SWP], [MPW] or [SPCH] to enter the indepen- dent item set mode. ➥Push for 1 sec. to enter the set mode for commonly used item settings. !6 ATTENUATOR•PRE-AMP SWITCH [ATT•P.AMP] ➥Push to switch the attenuator function ON and OFF. (p. 29) Use this function to protect from signal distortion from exces- sively strong signals. •The attenuation level is independently ad- justable for 144 MHz or 430(440) MHz band in the ATT set mode. The optional 1200 MHz band attenuation level is fixed and is approx. 20 dB. (p. 65) ➥Push for 1 sec. to switch the connected pre-amplifier ON and OFF, when an op- tional pre-amplifier unit, AG-25, AG-35 and/or AG-1200, is connected. (p. 16) DO NOT connect any equipment, such as an SWR or power meter between the transceiver and pream- plifier. In such case, the preamplifier may not acti- vate properly. !7 AUTO FREQUENCY CONTROL/NOISE BLANKER•NOISE REDUCTION SWITCH [AFC/NB•NR] ➥During FM/FM narrow mode operation, push to switch the AFC (Automatic Fre- quency Control) function ON and OFF. (p. 28) •Automatically tunes the operating frequency, when an off-frequency signal is received, in 100 kHz steps. This function also follows the signal even if the frequency is shifted. ➥During SSB or CW mode operation, push to switch the noise blanker function ON and OFF. (p. 30) •Reduces pulse-type noise, such as ignition noise from a vehicle. ➥Push for 1 sec. to switch the noise re- duction function ON and OFF when an optional DSP unit, UT-106, is installed. (p. 31) •Reduces unwanted noise and pulls out the desired signal only for clear readability. For 1 sec. For 1 sec. For 1 sec. !4 !5 !6 !7 !8 !9 @0 @1 @2 @3 From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

SWITCH [AGC•ANF] ➥Push to switch the time constant of the automatic gain control to SLOW and FAST for the MAIN band.* (p. 28) •SLOW selection (“FAGC” disappears) during SSB (USB or LSB) operation, FAST selection (“FAGC” appears) during CW, data operation and while tuning with fast tuning dial rotation are recommended. *The AGC time constant can be selected on the MAIN band only. FAST selection is fixed on the SUB band. ➥Push for 1 sec. to switch the automatic notch filter function ON and OFF when the optional DSP unit, UT-106, is in- stalled. (p. 31) •Reduces interference signals such as beat, RTTY or CW signals and the notch frequency automatically follows the interfering signal. !9 kHz/MHz•TUNING STEP SELECTION SWITCH [kHz/MHz] (p. 22) ➥Push to select tuning step for the tuning dial or scanning from 1 kHz, 1 MHz step and regular tuning step* in sequence •“Z” appears above the 1 kHz or 1 MHz digit when 1 kHz or 1 MHz tuning step is selected, respectively. *The regular tuning step is selected for each operating mode as follows. ➥Push for 1 sec. to enter the regular tun- ing step selection mode. •The tuning step can be selected for each op- erating mode independently. •SSB/CW mode: 1, 10, 50 and 100 Hz step; FM mode: 0.1, 5, 6.25, 10, 12.5, 20, 25 and 100 kHz step can be selected by rotating the tuning dial. @0 SPEECH•LOCK SWITCH [SPCH•LOCK] ➥Announces the receiving signal strength and/or selected readout frequency when the optional UT-102 is installed. (pgs. 69, 71) ➥Push for 1 sec. to switch the tuning dial lock function ON and OFF to prevent ac- cidental setting changes. (p. 25) @1 TUNING DIAL Changes the displayed frequency, selects set mode items, etc. @2 BRAKE ADJUSTMENT SCREW Adjust the tension of the tuning dial. •Rotate clockwise to increase the tension; counterclock- wise to decrease the tension. @3 MEMORY CHANNEL UP/DOWN SWITCHES [Y UP]/[DOWN Z] (p. 40) ➥Push [Y UP] to change the memory channel up; push [DOWN Z] to change the memory channel down. •Memory channel changes continuously while holding either switch. •Memory channels can be selected both in VFO and memory modes. For 1 sec. or or Brake adjustment screw For 1 sec. For 1 sec. For 1 sec. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

@4 RIT CONTROL [RIT] (p. 27) Shifts the receive frequency without changing the transmit frequency for the MAIN band only while the RIT function is activated. •SSB/CW mode : ±1.0 kHz* in 10 Hz step •FM mode : ±5.0 kHz* in 50 Hz step *For 1200 MHz band; ±2.0 kHz and ±10.0 kHz, respec- tively when the optional UX-910 is installed. •By using the Sub dial function, the RIT control can be used as the MAIN/SUB tuning dial or the SUB band IF shift control. See page 24 for details. @5 IF SHIFT CONTROL [SHIFT] Shifts the center frequency of the receiver’s IF passband within 1.2 kHz range. •By using the Sub dial function, the IF shift control can be used as the MAIN/SUB tuning dial or the SUB band IF shift control. See page 24 for details. ✔What is the Sub dial function? The [RIT] and [SHIFT] controls are used for RIT and IF shift controls for the MAIN band by default. However, the Sub dial function assigns these controls as the MAIN/SUB tuning dial or the SUB band IF shift control. (p. 24, 68) @6 SATELLITE SWITCH [SATELLITE] ➥Push to enter satellite mode (RX on MAIN, TX on SUB band). Push again to return to the condition before entering into the satellite mode. ➥Push to enter satellite mode using the current operating frequencies when pushing for 1 sec. •To change the normal and reverse satellite operations, push [F-INP/ENT] for 1 sec. @7 RIT SWITCH [RIT] (p. 27) ➥Push to switch the RIT control activity ON and OFF. •“RIT” indicator appears when the RIT func- tion is in use. ➥Push for 1 sec. to switch the Sub dial function ON and OFF. •“RIT” indicator flashes and the [RIT] and [SHIFT] controllers acts as the controllers specified in the RIT/SHIFT set mode. (p. 68) @8 KEYPAD Numeral and other function keys for tuning and ac- For 1 sec. For 1 sec. For 1 sec. RIT SHIFT RIT SHIFT RIT SHIFT Center position Max. counter- clockwise position Max. clockwise position I Front panel (continued) @4 @5 @6 @8 @7 From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

frequency. (p. 23) •Switches between VFO and memory mode. (p. 40) Enters numeral “2” when entering an operating frequency. (p. 23) •Enters numeral “3” when entering an operating frequency. (p. 23) •Switches between VFO A and B during VFO mode operation. (p. 21) Enters numeral “4” when entering an operating frequency. (p. 23) Enters numeral “5” when entering an operating frequency. (p. 23) Enters numeral “6” when entering an operating frequency. (p. 23) Enters numeral “7” when entering an operating frequency. (p. 23) •Enters numeral “8” when entering an operating frequency. (p. 23) •Stores the displayed operating conditions into MEMO PAD channel (p. 44) •Enters numeral “9” when entering an operating frequency. (p. 23) •Re-calls the contents in the MEMO PAD channel. (p. 44) •Enters decimal point “.” for entering below the “MHz“ digits when entering an operating fre- quency. •Starts and cancels scanning function. (p. 46) •Turns OFF the SUB band frequency indication during satellite operation. In this case, only the MAIN band frequency can be tuned by rotating the tuning dial. (p. 49) •Enters numeral “0” when entering an operating frequency. (p. 23) •Switches sweep function for the bandscope ON and OFF. (p. 29) •Turns OFF the MAIN band frequency indication during satellite operation. In this case, only the SUB band frequency can be tuned by rotating the tuning dial. (p. 49) Enables operating frequency entering from the keypad. See page 23 for details. Equalizes the condition of the VFO A and B. (p. 21) Shows 10 Hz and 1 Hz digits of operating fre- quency on both the MAIN and SUB bands while pushing and holding. (p. 22) Stores the set conditions into a memory channel. (p. 41) Clears stored contents of memory channel to be a blank channel. (p. 43) Transfers the contents of a memory channel into either the VFO A or B. (p. 42) Opens squelch for monitoring the operating or transmit frequency, and the frequency indication automatically changes to transmit frequency in the case of duplex or split operation. (p. 34) Starts and cancels tone scan when the repeater tone or tone squelch is activated in FM (narrow) operation. (p. 47) Used to change memory channel during memory mode operation by rotating the tuning dial while pushing and holding. (p. 40) Switch Switch action when pushed Switch action when pushed for 1 sec. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

@9 SPLIT•DUPLEX SWITCH [SPLIT•DUP] ➥Push to turn the split function, with the VFO A and B, ON and OFF. (p. 37) •The split operation is not available for the SUB band. ➥Push for 1 sec. to select the duplex (re- peater) direction or to turn the function OFF. (p. 34) •The duplex operation is not available for the SUB band. #0 SSB/CW•CW-NARROW SWITCH [SSB/CW•CW-N] ➥Push to switch the operating mode be- tween SSB and CW. (p. 23) ➥Push for 1 sec. to switch the operating mode between USB and LSB or between CW and CW narrow during SSB or CW mode, respectively. #1 FM•FM-NARROW SWITCH [FM•FM-N] (p. 23) ➥Push to switch the operating mode be- tween FM and FM repeater mode. •The duplex operation can be made in MAIN band only, it cannot be operated in SUB band. ➥Push for 1 sec. to switch the operating mode between FM and FM-N (FM nar- row). •The FM-N mode cannot be selected in 1200 MHz band operation. #2 TONE SWITCH [TONE] ➥Push to turn the tone encoder function ON and OFF in FM mode. (p. 31; except for European version) •“T” indicator appears in the display when the tone encoder is activated. ➥Push to transmit a 1750 Hz repeater tone in FM mode for European version. Available repeater tones (Unit: Hz) #3 MAIN/SUB CHANGE•BAND SWITCH [M/S•BAND] ➥Push to replace the MAIN band’s fre- quency and mode with the SUB band’s. (p. 19) ➥Push for 1 sec. to change the operating band during single band operation or when the optional band unit, UX-910, is installed. (p. 20) For 1 sec. For 1 sec. For 1 sec. For 1 sec. #5 #4 #3 #2 #1 #0 @9 67.0 69.3 71.9 74.4 77.0 79.7 82.5 085.4 088.5 091.5 094.8 097.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 254.1 I Front panel (continued) From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

➥Push to enable the SUB band control from the tuning dial, keypad, etc. (p. 19) •“SUB” indicator appears. ➥Push for 1 sec. to turn the SUB band readout indication ON and OFF. (p. 24) #5 CALL•TONE SQUELCH SWITCH [CALL•T-SQL] ➥Push to select the call channel of the op- erating band. The call channel can be se- lected from both the VFO and memory mode operation. (p. 43) ➥Push for 1 sec. to turn the tone squelch function ON and OFF during FM mode operation. (p. 30) •“T-SQL” indicator appears when the tone squelch is activated. For 1 sec. For 1 sec. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

q FREQUENCY READOUTS (p. 22) Shows the operating frequency. •Setting item name is indicated during set mode. (p. 55) w MODE INDICATOR (p. 23) Shows the selected operation mode. e TUNING STEP INDICATOR (p. 22) Appears when the 1 kHz or 1 MHz tuning step is se- lected. r DUPLEX INDICATOR (p. 34) Either “DUP–” or “DUP+” appears during duplex (re- peater) operation. t SPLIT INDICATOR (p. 37) Appears during split operation. y RIT INDICATOR (p. 27) ➥Appears while the RIT function is activated. ➥Flashes while the SUB dial function is activated. u VFO INDICATOR (p. 21) Either VFO A or VFO B appears during VFO opera- tion. i MEMORY MODE INDICATORS/MEMORY CHANNEL NUMBER READOUTS (p. 40) The memory mode indicator appears during mem- ory mode operation and the memory channel num- ber readout shows the selected memory channel number during both the memory and VFO mode op- eration. ✔Memory channel number readout In addition to the memory channel number indication, the memory channel number readout indicates 10 Hz and 1 Hz digits of operating frequency while rotating the tuning dial in SSB or CW mode with 10 or 1 Hz tuning step. After 2 sec. from tuning dial operation, the readout indicates the memory channel number. o AUTO NOTCH FILTER INDICATOR (p. 31) Appears when the optional DSP unit, UT-106, is in- stalled, and the ANF (Automatic Notch Filter) func- tion is activated. !0 BLANK INDICATOR (p. 42) Appears when the selected memory channel has not been programmed or has been cleared. VFO A VFO B MEMO RIT CW N LSB USB N FM SUB NOR SATL REV LOCK T-SQ SQL S 1 3 5 7 9 20 40 60dB ATT P.AMP .AMP AFC AFCNB NB FAGC NR ANF BLANK NK SWP SCAN O V E R O V E R MEMO FMNUSB USBLSBCW N RIT RIT SPLIT SPLIT VFO A VFO B SET BLANK T-SQL ATT P.AMP AFC NB FAGC AGC NR ANF ANF 9600 COMP MP SWP 60dB VOX SCAN O V E R S 1 3 5 7 9 20 40 DUP q q w w e e r t y y u u i i o o !0 !0 !1 !2 !3 !4 !5 !5 !6 !6 !7 !7 !8 !8 !9 !9 @0 @0 @1 @1 @2 @2 @3 @3 @5 @6 @7 @8 @4 @4 I Function display From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

(p. 52) Appears when 9600 bps speed is selected for packet transmission. !2 SPEECH COMPRESSOR INDICATOR (p. 36) Appears when the speech compressor is activated. !3 SET INDICATOR (p. 55) Appears when [SET] is pushed. Disappears after any switch is pushed. !4 VOX INDICATOR (p. 33) Appears when the VOX function is activated. !5 SWEEP INDICATOR (p. 29) Flashes while the simple bandscope function is ac- tivated. !6 SCAN INDICATOR (p. 46) Flashes while scanning. !7 NOISE REDUCTION INDICATOR (p. 31) Appears when the optional DSP unit, UT-106, is in- stalled and the noise reduction is activated. !8 AGC TIME CONSTANT INDICATOR (p. 28) Appears when the FAST AGC time constant is se- lected; disappears when the SLOW AGC time con- stant is selected. !9 NOISE BLANKER INDICATOR (p. 30) Appears when the noise blanker function is acti- vated. @0 AUTO FREQUENCY CONTROL INDICATOR (p. 28) Appears when the AFC (Automatic Frequency Con- trol) function is activated. @1 PRE-AMP INDICATOR (p. 16) Appears when the optional pre-amplifier unit, AG-25, AG-35 and/or AG-1200, is connected and the pre-amplifier function is activated. @2 ATTENUATOR INDICATOR (p. 29) Appears when the attenuator is activated. @3 MULTI-FUNCTION BAR METER ➥Shows the receiving signal strength as an S- meter while receiving. Peak hold function is avail- able and can be switched ON and OFF in regular set mode. (pgs. 26, 56) ➥Shows the relative transmit output power level as an RF power indicator during transmit. (p. 32) ➥Shows signal availability in the sweeping band, and the “M” indicator indicates the center of the sweeping frequency band. @4 TONE SQUELCH INDICATOR (pgs. 30, 34) “T” appears when the tone encoder function is acti- vated; “T-SQL” appears when the tone squelch function is activated. @5 SUB INDICATOR (p. 19) Appears when the SUB band access is enabled. @6 SATELLITE INDICATOR (p. 49) Appears while satellite operation mode is selected. • - : Satellite operation with normal mode is selected. • - : Satellite operation with reverse mode is selected. @7 REMOTE INDICATOR (p. 78) Appears when the transceiver is controlled remotely via the optional CI-V level converter, CT-17. @8 LOCK INDICATOR (p. 25) Appears when the dial lock function is activated. REV SATL NOR SATL From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Rear panel q 430(440) MHz ANTENNA CONNECTOR (p. 15) Accepts a 50 Ωantenna with a type-N connector. w DC POWER SOCKET [DC 13.8V] (p. 17) Accepts 13.8 V DC through the supplied DC power cable (OPC-657A). e 144 MHz ANTENNA CONNECTOR (p. 15) Accept a 50 Ωantenna with a PL-259 connector. r SUB BAND EXTERNAL SPEAKER JACK [SP (SUB)] t MAIN BAND EXTERNAL SPEAKER JACK [SP (MAIN)] (p. 16) Accepts a 4–8 Ωspeaker. By connecting an external speaker for each or both jacks, the audio for both the MAIN and SUB bands is output as follows. y 1200 MHz ANTENNA CONNECTOR (p. 15) Available when the optional 1200 MHz band unit is installed. Accepts a 50 Ωantenna with a type-N connector. u KEY JACK [KEY] (p. 15) Accepts a paddle, a straight key or external elec- tronic keyer with 1⁄8 inch standard plug. i SUB BAND DATA SOCKET [DATA (SUB)] o MAIN BAND DATA SOCKET [DATA (MAIN)] (p. 13) 6-pin mini plug DIN jack to connect a TNC, etc. for high speed data communications. Simultaneous data communications are provided by equipping independent data sockets for both MAIN and SUB bands. !0 ACCESSORY SOCKET [ACC(1)] Enables connection of external equipment such as a TNC for data communications, etc. •See the right table for socket information. !1 CI-V REMOTE CONTROL JACK [REMOTE] (p. 78) Designed for use with a personal computer via the optional CT-17 for remote control of transceiver functions. !2 GROUND TERMINAL [GND] (p 14) Connect this terminal to a ground to prevent electri- cal shocks and other problems. (dot) (com) (dash) (+) (_) Rear panel view + _ o !2 w e r t y u i q !0 !1 MAIN AF SUB AF No Int. SP Int. SP SP (MAIN) Ext. SP Ext. SP SP (SUB) Int. SP Ext. SP Both Ext. SP (MAIN) Ext. SP (SUB) From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

DDATA SOCKETS 1 2 3 4 5 6 7 8 NC GND SEND MOD AF SQLS 13.8 V ALC No connection. Connect to ground. Input terminal to transmit the trans- ceiver in relation to the external equip- ment. (Grounded: transmits) Input terminal for the modulation cir- cuit. Output terminal for AF signals from the AF detector circuit. Output level is fixed, regardless of [AF] control. Output terminal for squelch condition (Open/Close). Outputs grounded level signal when squelch is opened. Output terminal for 13.8 V DC, in re- lation to the [POWER]. Input terminal for ALC control. Transmit voltage : –0.5 to +0.8 V Output current : Less than 20 mA Input current (Tx) : Less than 200 mA Output impedance : 10 kΩ Input level : 100 mV rms Output impedance : 4.7 kΩ Output level : 100–300 mV rms Squelch open : Less than 0.3 V/5 mA Squelch close : More than 6.0 V/100 µA Output current : Less than 1 A Input impedance : More than 10 kΩ 1 2 3 4 5 6 7 8 1 2 3 4 5 6 DATA IN GND PTTP DATA OUT AF OUT SQL Input terminal for data (common for both 1200 and 9600 bps) Ground line for the DATA IN, DATA OUT and AF OUT. Transmits when this terminal is grounded. Received data output terminal for 9600 bps operation. Received data output terminal for 1200 bps operation. Output terminal for squelch condition (Open/Close). Outputs grounded level signal when squelch is opened, +8 V level signal when squelch is closed. q w e y t r o MAIN BAND DATA SOCKET i SUB BAND DATA SOCKET DATA Socket Pin No. Pin Name Description 1 2 3 4 5 6 NC GND NC DATA OUT AF OUT SQL No connection. Ground line for the DATA IN, DATA OUT and AF OUT. No connection. Received data output terminal for 9600 bps operation. Received data output terminal for 1200 bps operation. Output terminal for squelch condition (Open/Close). Outputs grounded level signal when squelch is opened, +8 V level signal when squelch is closed. q w e y t r From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Unpacking After unpacking, immediately report any damage to the delivering carrier or dealer. Keep the shipping cartons. For a description and a diagram of accessory equip- ment included with the IC-910H, see ‘Supplied acces- sories’ on p. 1 of this manual. I Grounding To prevent electrical shock, television interference (TVI), broadcast interference (BCI) and other prob- lems, ground the transceiver through the GROUND terminal on the rear panel. For best results, connect a heavy gauge wire or strap to a long earth-sunk copper rod. Make the distance be- tween the [GND] terminal and ground as short as pos- sible. RWARNING: NEVER connect the [GND] terminal to a gas or electric pipe, since the connec- tion could cause an explosion or electric shock. I Selecting a location Select a location for the transceiver that allows ade- quate air circulation, free from extreme heat, cold, or vibrations, and away from TV sets, TV antenna ele- ments, radios and other electro-magnetic sources. The base of the trans- ceiver has an ad- justable stand for desk- top use. Set the stand to depending on your operating conditions. I Antenna connection For radio communications, the antenna is of critical im- portance, along with output power and sensitivity. Se- lect antenna(s), such as a well-matched 50 Ωantenna, and feedline. 1.5:1 or better of Voltage Standing Wave Ratio (VSWR) is recommended for your desired band. Of course, the transmission line should be a coaxial cable. CAUTION: Protect your transceiver from lightning by using a lightning arrestor. PL-259 CONNECTOR INSTALLATION EXAMPLE TYPE-N CONNECTOR INSTALLATION EXAMPLE 30 mm ≈9⁄8 in 10 mm ≈3⁄8 in 1–2 mm ≈1⁄16 in Slide the coupling ring down. Strip the cable jacket and soft solder. Slide the connector body on and solder it. Screw the coupling ring onto the connector body. Strip the cable as shown at left. Soft solder the center conductor. q w e r Slide the nut, rubber gasket and clamp over the coaxial cable, then cut the end of the cable evenly. Strip the cable and fold the braid back over the clamp. Soft solder the center conductor. Install the center conductor pin and solder it. Carefully slide the plug body into place aligning the center conductor pin on the cable. Tighten the nut onto the plug body. q w e r 15 mm 3 mm 6 mm 30 mm 10 mm (soft solder) 10 mm 1–2 mm solder solder Soft solder Coupling ring No space Solder hole Be sure the center conductor is the same height as the plug body. Clamp Center conductor Washer Nut Rubber gasket From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

[430(440)MHz ANT] (p. 14) [1200MHz ANT] (p. 14) [144MHz ANT] (p. 14) [KEY] jack (p. 38) GROUND (p. 14) Required for optional UX-910 operation. + _ 13.8 V DC More than 25 A (dot) (com) (dash) + _ 15 3 INSTALLATION AND CONNECTIONS SM-20 DESKTOP MICROPHONE (optional) MICROPHONE CONNECTOR (Front panel view) Input impedance: 8–16 Ω Audio output power: 5 mW with 8 Ω load Output power may differ according to the headphone HM-12 HAND MICROPHONE HEADPHONES q MIC (Microphone input) w +8V (Max. 8 V DC 10 mA) e MIC U/D (Frequency up/down) r SQL S (Squelch switch) t PTT y GND (PTT ground) u GND (Microphone ground) i AF OUT (varies with [AF]) CAUTION: DO NOT short pin 2 to ground as this can damage the internal 8 V regulator. DC voltage is applied to pin 1 for microphone operation. Take care when using a non-Icom microphone. q w e r t y u i I Required connections •Front panel •Rear panel From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

MB-23 CARRYING HANDLE PREAMP (p. 59) (144 MHz/430(440) MHz/1200 MHz) EXTERNAL SPEAKER (MAIN/SUB) (p. 12) CT-17 144 MHz : AG-25 430(440) MHz : AG-35 1200 MHz : AG-1200 External all-weather, mast mounting preamplifiers are available. MAIN MAIN 144 MHz 430(440) MHz 1200 MHz (optional) SUB SUB sp-7 icom Use 4–8 Ω speakers. [REMOTE] (p. 78) Used for computer control and transceive operation. Used for external equipment control. ACC SOCKETS (pgs. 13, 52) DATA SOCKETS (MAIN/SUB) (pgs. 13, 52) CAUTION: NEVER connect equipment (i.e. power, SWR meter) between transceiver and preamplifier. I Advanced connections •Front panel •Rear panel From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

A DC power supply Black _ Red + IC-910H Supplied DC power cable 17 3 INSTALLATION AND CONNECTIONS 24V Ciga IC-910H 12 V battery Supplied DC power cable + red _ black Crimp Solder Grommet CONNECTING A VEHICLE BATTERY CONNECTING A DC POWER SUPPLY I Power supply connections Use an optional DC power supply with a 25 A capacity and above when operating the transceiver with AC power. Refer to the diagrams below. CAUTION: Before connecting the DC power cable, check the following important items. Make sure: •The [POWER] switch is OFF. •Output voltage of the power source is 12–15 V when you use a non-Icom power supply. •DC power cable polarity is correct. Red : positive + terminal Black : negative _ terminal NEVER connect to a 24 V battery. NEVER use the cig- arette lighter socket as a power source. NOTE: Use terminals for the cable connections. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

After resetting the transceiver, set controls and switches as shown in the figure below. Turn power ON, then check the display. If any of the following indicators appear, turn them OFF as follows: •Quick tuning step indicator “M” : Push [kHz/MHz]. •RIT indicator “RIT” : Push [RIT]. •Split indicator “SPLIT” : Push [SPLIT]. CCW : Max. counterclockwise 4 18 BASIC OPERATION I When first applying power (CPU resetting) Before first applying power, make sure all connections required for your system are complete by referring to Chapter 3. Then, reset the transceiver using the fol- lowing procedure. q Make sure the transceiver power is OFF. w While pushing [MW 4] and [M-CL 5], push [POWER] to turn power ON. •The internal CPU is reset. •The transceiver displays its initial VFO frequencies when resetting is complete. Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values. [POWER] [MW 4] [M-CL 5] FM VFO A VF VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 [TRANSMIT]: OFF [COMP]: OFF [VOX]: OFF [AF] (SUB band): CCW [RF/SQL]: (SUB band) 12 o’clock [MIC]: CCW [SET]: OFF [ATT(P.AMP)]: OFF [RF PWR]: CCW [AFC/NB]: OFF [AGC]: OFF [RIT]: 12 o’clock [SHIFT]: 12 o’clock [RIT]: OFF [POWER]: OFF [AF] (MAIN band): CCW [RF/SQL] (MAIN band): 12 o’clock [SATELLITE]: OFF From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

The IC-910H has dual bands: 144 MHz and 430(440) MHz. These bands can be assigned to the MAIN and SUB bands for operating convenience. Each MAIN and SUB bands have independent fea- tures. The MAIN band is the operation for both transmit and receive, and is displayed in the upper area of the func- tion display. The SUB band is the operation for only re- ceive, and is displayed in the lower area of the function display. Simultaneous receive on both the MAIN and SUB bands is possible, however the transmission can only be transmitted on the MAIN band— not on the SUB band. In the case of satellite operation mode, the SUB band is used for the transmission band. ◊Exchanging the MAIN and SUB bands The function display shows both the MAIN and SUB band frequencies and both bands can receive signals simultaneously. Assign 144 MHz or 430(440) MHz band, whichever band you want to transmit or be called on, as the MAIN band. ➥Push [M/S] to exchange the MAIN and SUB bands. FM VFO A VF VFO A FM S 1 3 5 7 9 20 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 MAIN band display SUB band display FM VFO A VF VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 FM VFO A VF VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 MAIN band display SUB band display FM VFO A VF VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 FM VFO A VF VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 SUB ◊Accessing the SUB band Normally, any operations, such as tuning, operating mode selection, memory channel selection and pro- gramming, etc., are performed on the MAIN band. However, these operations can be performed on the SUB band by using the SUB band access capability. ➥Push [SUB] to switch the SUB band access capa- bility ON and OFF. •“SUB” indicator appears while the SUB band access ca- pability is activated. •Even during SUB band access, transmission cannot be made on the SUB band. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Operating band selection (optional UX-910 is required) The IC-910H can be used on the additional 1200 MHz band with the optional UX-910. The operating band can be selected by pushing [M/S•BAND] for 1 sec. ◊Selecting on the MAIN band q Push [SUB] to cancel the SUB band access, if re- quired. w Push [M/S•BAND] for 1 sec. to select operating band. NOTE: The same operating band cannot be as- signed on both MAIN and SUB bands, simultane- ously. ◊Selecting on the SUB band q Push [SUB] to enable the SUB band access. •“SUB” indicator appears. w Push [M/S•BAND] for 1 sec. to select operating band. [SUB] [M/S•BAND] FM VFO A VF VFO A S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 Select 1200 MHz to MAIN band. FM VFO A VF VFO A FM SUB S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 Select 1200 MHz to SUB band. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

The IC-910H has two VFOs for both bands, specially suited for instant selection of 2 frequencies or split fre- quency operation. The VFOs are called VFO A and VFO B. You can use the desired VFO to call up a fre- quency and operating mode for your operation. VFO is an abbreviation of Variable Frequency Oscilla- tor, and traditionally refers to an oscillator. ◊Selecting the VFO A/B ➥Push [A/B 3] to switch between the VFO A and VFO B. ◊VFO equalization ➥Push [A=B 2] for 1 sec. to equalize the undisplayed VFO condition to the displayed VFO. •3 beeps sound when the VFO equalization is completed. Use two VFOs as a quick memory When you find a new station, but you wish to con- tinue searching, the two VFO system can be used for quick memory storage. q Push [A=B 2] for 1 sec. to store the displayed fre- quency into the undisplayed VFO. w Continue searching for stations. e Push [A/B 3] to retrieve the stored frequency. r To continue searching for stations, push [A/B 3] again. CONVENIENT FM VFO A FM VFO B VFO selection FM VFO A FM VFO B undisplayed VFO Equalizes the undisplayed VFO condition to the displayed VFO. displayed VFO From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Frequency setting The IC-910H has several tuning steps and a [kHz/MHz] switch for convenient frequency tuning. q Push [M/S] to select the desired frequency band as the MAIN band; or push [SUB] to access the SUB band. w Rotate the tuning dial to select the frequency. •The memory channel number changes to the 10 and 1 Hz digits when rotating the tuning dial with 1, 10, 100 Hz and 6.25 kHz tuning steps. •When you want to check the 10 and 1 Hz digits during memory channel number indication, push and hold [A/B] (10 and 1 Hz digits are indicated while holding). ◊Tuning step selection Tuning steps can be pre-set independently for FM and SSB/CW. The following steps are selectable. •FM : 0.1, 5, 6.25, 10, 12.5, 20, 25 or 100 kHz •SSB/CW : 1, 10, 50 or 100 Hz q Push [M/S] to select the desired frequency band as the MAIN band; or push [SUB] to access the SUB band. w Push [FM] or [SSB/CW] to select the desired oper- ation mode. e Push [kHz/MHz•TS] for 1 sec. to enter the tuning step set mode. r Rotate the tuning dial to select the desired tuning step. t Push [kHz/MHz•TS] to return to previous display. ◊Quick tuning step The operating frequency can be changed in 1 kHz steps or 1 MHz steps for quick tuning. ➥Push [kHz/MHz•TS] to switch the quick tuning step in sequence 1 kHz, 1 MHz and OFF. USB USB VFO A USB USB 10 Hz/1 Hz indication While tuning [kHz/MHz•TS] for 1 sec. FM USB USB (20 kHz tuning step) (10 Hz tuning step) FM mode tuning step set mode SSB/CW mode tuning step set mode [kHz/MHz•TS] FM VFO A 1 kHz tuning step 1 MHz tuning step From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

The operating frequency can be directly entered from the keypad. q Push [F-INP ENT] to access the keypad frequency entry. •All digits of frequency indication disappear. w Push numeral keys to enter the desired operating frequency. •The entered number is indicated from the 100 Hz digit. e Push [F-INP ENT] to set the frequency. [EXAMPLE] 145.3400 MHz [F-INP ENT] [1] [4] [5] [.] [3] [4] [F-INP] 435.0000 MHz [F-INP ENT] [4] [3] [5] [.] [F-INP ENT] 439.1200 MHz [F-INP ENT] [4] [3] [9] [.] [1] [2] [F-INP ENT] 439.1200 MHz to 439.2604 MHz [F-INP ENT] [.] [2] [6] [0] [4] [F-INP ENT] Pushing numeral keys to 100 Hz digit without push- ing [.] also sets the desired operating frequency. keypad ◊Operating mode selection SSB (USB/LSB), CW, CW-N (CW narrow), FM and FM-N (FM narrow) modes are available in the IC-910H. Select the desired operation mode as fol- lows. •Selecting SSB mode ➥Push [SSB/CW] to select USB mode. •USB mode is generally used for SSB phone operation on the VHF and UHF bands. •Push [SSB/CW] for 1 sec. after USB mode selection to switch between USB and LSB mode. •Selecting CW mode ➥Push [SSB/CW] to select CW mode. •Push [SSB/CW] for 1 sec. after CW mode selection to switch between CW and CW narrow mode. The optional CW narrow filter, FL-132 or FL-133, is required for the MAIN or SUB bands, respectively. In satellite operation, the optional FL-133 is neces- sary to operate CW narrow mode in the MAIN (re- ceive) band. No audio is output until the optional CW narrow filter is installed in the CW narrow mode. •Selecting FM mode ➥Push [FM] to select FM mode. •Push [FM] after FM mode selection to turn the repeater mode (duplex negative with repeater tone ON) ON and OFF. •Push [FM] for 1 sec. after FM mode selection to switch between FM and FM narrow mode. •When the optional UT-102 voice synthesizer unit is installed. The UT-102 announces the selected mode in an elec- tronically-generated voice when [SSB/CW] or [FM] is pushed. (pgs. 69, 71) [FM] [SSB/CW] From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

SUB tuning dial q Push [RIT] for 1 sec. •“RIT” indicator flashes when the SUB tuning dial func- tion is activated. w Rotate [RIT] control for the desired tuning direction and speed. •Tuning speed can be adjusted in ±5 steps. e Set [RIT] control to the center position to stops tun- ing. •A beep tone sounds when [RIT] control is set to the cen- ter. r Push [RIT] to cancel the SUB tuning dial function. 24 4 BASIC OPERATION I SUB band OFF The SUB band indication can be deactivated to sim- plify operation. ➥Push [SUB•SUB OFF] for 1 sec. to turn the SUB band indication ON and OFF. •Push [M/S•BAND] for 1 sec. to change the operating band. (p. 20) I SUB tuning dial The IC-910H has a large main tuning dial for frequency setting. In addition, the [RIT] or [SHIFT] controls can be used as a SUB tuning dial for dual band simultane- ous tuning, etc. The SUB tuning dial changes the op- erating frequency continuously at a variable speed. To use the SUB tuning dial function, assign the func- tion to either the [RIT] or [SHIFT] control using the RIT/SHIFT set mode. The assigned control can be used for its original function, however, both functions cannot be used si- multaneously. FM VFO A 60dB S 1 3 5 7 9 20 40 SUB band indication OFF. [SUB•SUB OFF] for 1 sec. FM RIT RIT V F O A V F O A V F O A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 While [RIT] is flashing, SUB band can be controlled with sub dial function. Advances the frequency and increases the speed. Reverses the frequency and increases the speed. SUB dial functions slightly. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

q Push [SET] then [RIT] to enter the RIT/SHIFT set mode. w Push [DN M] or [L UP] to select [RIT] or [SHIFT] control to be assigned. •“rit nob” or “SFt nob” appears. e Rotate the tuning dial to select the condition as de- scribed below. •Pushing [M-CL 5] for 1 sec. selects the default setting. r Push [SET] to exit from the RIT/SHIFT set mode. [SET] [DN M] [L UP] [RIT] [RIT] [SHIFT] The [RIT] control functions as [RIT] even when the SUB tuning dial function is in use. (default) The [RIT] control can be used for MAIN band tuning. The [RIT] control can be used for SUB band tuning. The [RIT] control can be used for SUB band IF shift control. The [SHIFT] control functions as [SHIFT] even when the SUB tuning dial function is in use. (default) The [SHIFT] control can be used for SUB band IF shift control. The [SHIFT] control can be used for MAIN band tuning. The [SHIFT] control can be used for SUB band tuning. I Dial lock function The dial lock function prevents accidental changes caused by the tuning dial (including the SUB tuning dial function). ➥Push [SPCH•LOCK] for 1 sec. to turn the dial lock function ON and OFF. •“LOCK” indicator appears while the dial lock function is activated. FM VFO A VF VFO A FM LOCK S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 LOCK indicatior [SPCH•LOCK] for 1 sec. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

◊Volume setting ➥Rotate [AF] control for the specified operating band (MAIN or SUB) to output a suitable audio level. ◊Squelch setting The squelch removes noise output from the speaker (closed position) when no signal is received. The squelch is particularly effective for FM. It is also avail- able for other modes. With the default setting, noise squelch and S-meter squelch in FM, RF gain and S-meter squelch in SSB/CW mode operation are assigned to [RF/SQL] control. The assignment can be changed in the gen- eral set mode. (p. 56) •When operating in FM q Rotate [RF/SQL] fully counterclockwise. w Rotate [RF/SQL] clockwise to the position where the noise just disappears. •MAIN/SUB band indicator also goes OFF. By rotating [RF/SQL] to a deeper position (clockwise), the S-meter will move and the S-meter squelch func- tion will be activated. When the S-meter squelch is ac- tivated, weak signals, weaker than the S-meter squelch set level, are ignored. •When operating in SSB/CW q Rotate [RF/SQL] fully counterclockwise. w Rotate [RF/SQL] clockwise to the position where the maximum RF gain (S-meter bar disappears), MAIN/SUB band indicator goes OFF, and floor noise disappears. •With the default setting, the squelch opens at 12 o’clock position, however, the squelch threshold level can be set to 13 o’clock (1 o’clock) position in the SSB/CW set mode. (p. 62) •When rotating [RF/SQL] counterclockwise, RF gain de- creases (lower sensitivity) and the S-meter bar appears to indicate the receivable RF signal level. [RF/SQL] (SUB) [RF/SQL] (MAIN) 5 26 RECEIVE AND TRANSMIT [AF] (SUB) [AF] (MAIN) From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

The RIT (Receive Incremental Tuning) function com- pensates for off-frequencies of the communicating sta- tion without moving the transmit frequency. The RIT function can be used for the MAIN band only. The function affects the MAIN band even when ac- cessing the SUB band. q Push [RIT] to turn the RIT function ON. •“RIT” indicator appears. w Rotate [RIT] control to cancel the off-frequencies. •Rotate [RIT] control to the center position, after commu- nication. e Push [RIT] to cancel the RIT function. •“RIT” indicator disappears. ◊RIT variable range SSB/CW mode : ±1.0 kHz in 10 Hz steps (±2.0 kHz for optional 1200 MHz band) FM mode : ±5.0 kHz in 50 Hz steps (±10.0 kHz for optional 1200 MHz band) FM RIT RIT FM mode RIT RIT USB USB RIT variable range is displayed for 2 sec. and then returns to frequency indication. RIT variable range is displayed for 2 sec. and then returns to frequency indication. SSB mode [RIT] control [RIT] switch 27 5 RECEIVE AND TRANSMIT I IF shift function The IF shift function electronically changes the pass- band frequency of the IF (Intermediate Frequency) and cuts out higher or lower frequency components of the IF to reject interference. The function shifts the IF fre- quency up to ±1.2 kHz in 100 Hz steps in SSB/CW mode. The IF shift is especially useful in SSB opera- tion and not available in FM mode. The IF shift function can be used for the SUB band using the SUB tuning dial function (p. 24) ◊MAIN band IF shift operation q Set the [SHIFT] control to its center position when there is no interference. w Rotate the [SHIFT] control to adjust for minimum in- terference signal level. •The audio tone may change while the IF shift is in use. ◊SUB band IF shift operation q Assign the SUB band IF shift function to either [RIT] or [SHIFT] control using the RIT/SHIFT set mode (p. 68). w Push [RIT] for 1 sec. to turn the SUB tuning dial function ON. •“RIT” indicator flashes. e Rotate [RIT] or [SHIFT] control for a minimum inter- ference signal level. r Push [RIT] to cancel the SUB tuning dial function. •“RIT” indicator disappears. •Set [RIT] or [SHIFT] control to the center position after the communication. In satellite operation mode, the SUB tuning dial function cannot be activated. Therefore, the [SHIFT] control acts as an IF shift for the receive band (dis- played in the upper area). Center position Max. counter- clockwise position Max. clockwise position From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I AGC time constant The AGC (Automatic Gain Control) controls receiver gain to produce a constant output level even when the received signal strength is varied by fading, etc. Use AGC slow for normal phone operation; AGC fast for re- ceiving data and searching for signals. ➥Push [AGC] to switch the time constant between fast and slow. •“FAGC” indicator appears when AGC fast is selected. •The AGC time constant is fixed in FM mode regardless of the FAGC indicator. The SUB band’s AGC is automatically selected as slow in SSB and fast in CW. AGC time constant cannot be changed in FM mode. I AFC function The AFC (Automatic Frequency Control) automatically tunes the operating frequency when receiving an off- frequency signal or receiving signal shifts in FM or FM narrow mode. ➥Push [AFC/NB] to turn the AFC function ON and OFF. •“AFC” indicator appears when the AFC function is acti- vated. When strong nearby signals are available, the AFC function may tune to those signals. I FM center indicator The MAIN/SUB band indicators indicate the received signal deviation in FM mode. When an off-center sig- nal is received, the indicator flashes. When an off-center signal is received, rotate the tun- ing dial or use the RIT function to illuminate the indica- tor continuously. The FM center indicator can be turned OFF using the FM set mode. (p. 61) [AGC] CW VFO A FAGC AGC [AFC/NB] FM VFO A AFC AFC Flashes in 300 msec. intervals. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

ing when very strong signals are near the desired fre- quency, or when very strong electric fields, such as from broadcasting stations are near from your location. The attenuator can be set to both or either band sepa- rately, and the attenuation level can be set for each band independently. ➥Push [ATT] to turn the attenuator ON and OFF. •“ATT” indicator appears when the attenuator is activated. ◊Setting the attenuation level q Push [M/S•BAND] or [SUB] to select the desired band of the attenuation level to be set. w Push [SET] then [ATT] to enter the attenuator set mode. e Rotate the tuning dial to select attenuation level. •Push [M-CL 5] to return to the default value. r Push [SET] to exit the attenuator set mode. NOTE: When using the noise blanker, received audio may be distorted if they are excessively strong. I Simple band scope This function allows you to visually “sweep” an area surrounding the set frequency for other signals. De- tected signals are indicated graphically on the S-meter. q Set the operating frequency and mode. w Push [SWP 0] to turn the simple band scope func- tion ON and OFF. •“SWP” indicator flashes when the simple band scope function is activated. •Detected signals are indicated using the S-meter and “M” indicator, displayed above the S-meter, shows the center frequency (displayed frequency). •The signal availability is detected by the noise squelch condition (open or close). e To monitor the detected signal, rotate the tuning dial to set the appearing “dot” of the S-meter to below the “M” indicator. •The frequency readout shows the detected signal fre- quency. ◊Setting sweeping time interval q Push [SET] then [SWP 0] to enter the sweep set mode. w Rotate the tuning dial to select sweeping time inter- val. •Push [M-CL 5] to return to the default value. e Push [SWP 0] to exit the sweep set mode. 29 5 RECEIVE AND TRANSMIT [ATT] CW VFO A ATT [SWP 0] FM V F O A SWP Indicates detected signals Sweep center Shows ±10 channels around the displayed frequency. Attenuation levels 144 MHz/ 0–100% variable 430(440) MHz bands Approx. 15 dB attenuation at 100% setting 1200 MHz band Approx. 20 dB fixed (optional) From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Noise blanker When operating in SSB or CW mode, pulse-type noise may be received such as from car ignitions. In this case, the noise blanker eliminates such noise. The noise blanker is effective on both the MAIN and SUB bands but cannot be used for FM, or non-pulse- type noise. ➥Push [AFC/NB] to turn the noise blanker function ON and OFF. •“NB” indicator appears when the noise blanker is acti- vated. •The noise blanker turns ON or OFF for both bands si- multaneously. When using the noise blanker, received audio may be distorted if the signals are excessively strong. I Tone squelch operation The tone squelch opens only when receiving a signal with the same pre-programmed subaudible tone. You can silently wait for a call from group members using the same tone. You can check the tone frequency using the tone scan function if desired. (p. 47) q Select the desired band by pushing [M/S•BAND]. w Push [FM] to select FM mode, then set the desired frequency. e Push [CALL•T-SQL] for 1 sec. to activate the tone squelch. •“T-SQL” indicator appears. r When the signal with correct tone is received, the squelch opens and audio can be heard. •When a signal with incorrect tone or no tone is received, the squelch does not open, however, the S-meter indi- cates the signal strength. •Push and hold [CHECK 7] to open the squelch manually and keep pushing to monitor. t Operate the transceiver in a normal way (push [PTT] to transmit; release [PTT] to receive). y Push [CALL•T-SQL] for 1 sec. to cancel the tone squelch. •“T-SQL” indicator disappears. ◊Setting the tone squelch frequency The tone squelch frequencies can be independently set for each band. q Push [M/S•BAND] to select the band for the tone squelch frequency to be set. w Push [SET] then [FM] to enter the FM set mode. e Push [DN M] or [L UP] to select tone squelch fre- quency item. r Rotate the tuning dial to select the desired tone squelch frequency. t Push [FM] to exit from the FM set mode. Tone frequency list unit: Hz FM VFO A T-SQL [SET] Tuning dial [FM] [CALL•T-SQL] [DN √]/[∫ UP] 67.0 69.3 71.9 74.4 77.0 79.7 82.5 085.4 088.5 091.5 094.8 097.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 254.1 [AFC/NB] CW VFO A NB From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Optional DSP functions To activate the following functions, the optional DSP unit, UT-106, must be installed for both or either the MAIN and/or SUB bands. ◊NR (Noise Reduction) function This function reduces noise components and picks out desired signals which are buried in noise. The received audio signals are converted to digital signals and then the desired signals are separated from the noise. The noise reduction function is available for all operating modes. q Push [M/S•BAND] or [SUB] to select the band you wish to activate, if required. w Push [AFC/NB•NR] for 1 sec. to turn the noise re- duction function ON and OFF. •“NR” indicator appears while the automatic notch filter is activated. ◊Setting the noise reduction level q Push [SET] then [AFC/NB•NR] to enter the noise reduction set mode. w Rotate the tuning dial to select the desired noise re- duction level. •Push [M-CL 5] for 1 sec. to return to the default value. e Push [AFC/NB•NR] to exit from the noise reduction set mode. USB USB VFO A NR [AFC/NB•NR] for 1 sec. ◊ANF (Automatic Notch Filter) function This function automatically attenuates beat tones, tun- ing signals, etc., even if they are moving. The auto- matic notch filter functions in SSB/FM modes. q Push [M/S•BAND] or [SUB] to select the band you wish to activate, if required. w Push [AGC•ANF] for 1 sec. to turn the automatic notch filter function ON and OFF. •“ANF” indicator appears while the automatic notch filter is activated. USB USB VFO A ANF ANF [AGC•ANF] for 1 sec. Unwanted tone frequency Desired signal (AF) Desired signal (AF) Particular frequency is attenuated Auto notch OFF Auto notch ON optional UT-106 From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Functions for transmit ◊Output power The transmit output power can be continuously ad- justed with [RF PWR]. Available power 144 MHz band : 5–100 W 430(440) MHz band : 5–75 W 1200 MHz band : 1–10 W (optional) NOTE: To prevent interference, listen on the fre- quency to make sure the frequency is clear before transmitting by pushing [CHECK 7]. [RF PWR] I Transmission via microphone When transmitting with a microphone, push [PTT] and speak into the microphone at a normal voice level. To maximize the readability of your transmitted sig- nal (voice), pause a few sec. after pushing [PTT]. Do not hold the microphone too close to your mouth. ◊Microphone gain Rotate [MIC GAIN] clockwise to increase, counter- clockwise to decrease the microphone gain. 9–12 o’clock position is recommended for [MIC GAIN]. [PTT] switch HM-12 I Indications during transmit ◊Transmit indicator The MAIN band indicator lights red while transmitting. However, the SUB band indicator lights red during satellite operation. ◊RF power indicator The S-meter for the MAIN band is used as the RF power indicator to indicate the relative output power level. However, the S-meter for the SUB band is used as the RF power indicator during satellite operation. ◊Time-out timer The time-out timer limits the continuously transmittable time period, and is selectable from 3, 5, 10, 20, 30 min. and OFF in TRANSMIT set mode. (p. 66) ◊PTT lock function Deactivate [PTT] and [TRANSMIT] switches. The func- tion can be switched ON and OFF in TRANSMIT set mode. (p. 66) S-meter while receiving RF power indicator while transmitting FM VFO A VF VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB O V E R S 1 3 5 7 9 20 40 O V E R O V E R From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I FM mode operation q Push [M/S•BAND] to select the desired band. w Push [FM] to select FM mode. •“FM” indicator appears. •Push [FM] again to select repeater operation after FM mode selection. “DUP–” and “T” indicators appear. •Push [FM] for 1 sec. to select FM narrow mode after FM mode selection. “FMN” indicator appears. e Rotate the tuning dial to set the desired frequency. r Push [PTT] to transmit. •The MAIN band indicator lights red. t Speak into the microphone at a normal voice level. •Setting the [MIC GAIN] control to 10–12 o’clock is rec- ommended. y Release [PTT] to receive. Tuning dial [FM] [M/S•BAND] [TRANSMIT] [MIC GAIN] I VOX operation (for SSB and FM) The VOX (Voice-operated Transmission) function switches between transmit and receive with your voice. This function provides an opportunity to input log en- tries into your computer, etc., while operating. q Push [M/S•BAND] to select the desired band. w Push either [SSB/CW] or [FM] to select phone mode (USB, LSB or FM). e Push [VOX] to switch the VOX function ON and OFF. •“VOX” indicator appears while the VOX function is acti- vated. ◊Adjusting the VOX gain q Push [SET] then [VOX] to enter the VOX set mode. w Push [DN M] or [M UP] to select the VOX gain item. •“GAIn” is displayed. e Rotate the tuning dial to adjust the VOX gain while speaking into the microphone at a normal voice level, until the transceiver begins transmitting. •With too sensitive a setting, the transceiver may trans- mit with other than your voice, such as noise, receiving signal, etc. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [VOX] to exit VOX set mode. ◊Adjusting the anti-VOX gain q Push [SET] then [VOX] to enter the VOX set mode. w Push [DN M] or [L UP] to select anti-VOX gain item. •“Anti” is displayed. e Rotate the tuning dial to adjust the anti-VOX gain while receiving a signal with a suitable audio output level, to the point where the transceiver does not transmit with the audio output from the speaker. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [VOX] to exit VOX set mode. ◊Adjusting the VOX delay q Push [SET] then [VOX] to enter the VOX set mode. w Push [DN M] or [L UP] to select the VOX delay item. •“dELAy” is displayed. e Rotate the tuning dial to adjust the VOX delay time while speaking into the microphone at a normal speed, to a convenient interval before returning to receive. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [VOX] to exit VOX set mode. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Repeater operation A repeater amplifies received signals and re-transmits them at a different frequency. When using a repeater, the transmit frequency is shifted from the receive fre- quency by an offset frequency. ◊Setting the auto repeater range The auto repeater function automatically turns ON the duplex operation with specified shift direction and tone encoder when the operating frequency is set in the de- sired frequency range. To activate the auto repeater function, the following operations are necessary. q Set one edge frequency of the desired frequency range. •Push [M/S•BAND] to select the desired band if required. •Push [FM] to select FM mode if required. w Set the desired repeater conditions. •Both one-touch repeater and manual repeater setting are acceptable. e Push [DNM] or [LUP] to select the memory chan- nel 1. •The memory channel 3 or 5 is also acceptable. r Push [MW 4] for 1 sec. to program the contents into the memory. •3 beep tones may sound. t Set the other side edge frequency of the desired frequency range. y Push [LUP] to select the memory channel 2. •Select memory channel 4 or 6, respectively if the mem- ory channel 3 or 5 is selected in step e. u Push [MW 4] for 1 sec. to program the contents into the memory. i Repeat steps q to u to program other ranges. o Push [POWER] for 1 sec. to turn the power OFF once, then push [POWER] to turn the power ON while pushing and holding [FM] and [TONE]. •The memory channels can be used for normal operation after programming. !0 Push [SET] then [FM] to enter the FM set mode. !1 Push [DNM] or [LUP] to select auto repeater item. •“AutorPt” is displayed. !2 Rotate the tuning dial to turn the auto repeater func- tion ON. U.S.A. version: •“on1” Activates duplex only. •“on2” Activates duplex and tone. •“oFF” Auto repeater function is turned OFF. Korea version: •“ON” Activates duplex and tone. •“OFF” Auto repeater function is turned OFF. !3 Push [FM] to exit from the FM set mode. NOTE: All repeater ranges for available bands must be programmed at the same time. Otherwise, the previously programmed ranges will be lost. ◊Frequency range and shift direction •U.S.A. version •Korea version FREQUENCY RANGE SHIFT DIRECTION 1439.0000–1440.0000 MHz “DUP–” appears 1290.0000–1293.0000 MHz “DUP–” appears FREQUENCY RANGE SHIFT DIRECTION 1145.2000–1145.4999 MHz 1146.6100–1146.9999 MHz “DUP–” appears 1147.0000–1147.3999 MHz “DUP+” appears 1442.0000–1444.9999 MHz “DUP+” appears 1447.0000–1449.9999 MHz “DUP–” appears 1282.0000–1295.9999 MHz “DUP–” appears ◊Setting the shift direction for the one- touch repeater function q Push [M/S•BAND] or [SUB] to select the desired frequency band. w Push [SET] then [FM] to enter the FM set mode. e Push [DNM] or [LUP] to select shift direction item. •“o_touch” and “rPt” are displayed. r Rotate the tuning dial to select the desired direction. •“DUP–” or “DUP+” is selectable. t Push [FM] to exit from the FM set mode. ◊Manual repeater setting (non-European versions) q Set the desired frequency. •Push [M/S•BAND] to select the desired band if required. •Push [FM] to select FM mode if required. w Push [SPLIT•DUP] for 1 sec. to select the duplex operation and the shift direction. •“DUP–” or “DUP+” indicator appears, depending on the selection. •Set the offset frequency in the FM set mode, if required. e Push [TONE] to activate the tone encoder. •“T” indicator appears. •Set the tone frequency in the FM set mode, if required. r Push [SPLIT•DUP] for 1 sec. and [TONE] to cancel the duplex operation and deactivate the tone en- coder. •“DUP–” or “DUP+” and “T” indicators disappear. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

◊Using the one-touch repeater function (non-European versions) By using the pre-programmed offset frequency, shift di- rection and tone frequency, quick and simple repeater operation can be made. The default values for offset frequency and direction are as follows: 144 MHz band : –0.600 MHz 430(440) MHz band : –5.000 MHz 1200 MHz band : –20.000 MHz (optional) Tone frequency : 88.5 Hz q Push [M/S•BAND] to select the desired frequency band. w Push [FM] to select FM mode. e Rotate the tuning dial to input the desired repeater frequency. •Direct frequency input using the keypad can be used for frequency setting. r Push [FM] to select the repeater operation mode. •“DUP–” and “T” indicators appear. t Push [PTT] to access the repeater. y Release [PTT] to receive a signal from the repeater. u Push [FM] to cancel the duplex operation mode. •“DUP–” and “T” indicators disappear. FM VFO A FM DUP VFO A T 60dB S 1 3 5 7 9 20 40 Shifts 5 MHz when transmitted. FM DUP VFO A T FM VFO A ◊Setting tone frequency (non-European versions) q Push [M/S•BAND] to select the desired frequency band. w Push [SET] then [FM] to enter the FM set mode. e Push [DNM] or [LUP] to select the tone frequency item. •“ton,” selected band (144/430(440)/1200) and “T” indi- cator appear. r Rotate the tuning dial to set the desired tone fre- quency. t Push [FM] to exit from the FM set mode. ◊Setting offset frequency q Push [M/S•BAND] or [SUB] to select the desired frequency band. w Push [SET] then [FM] to enter the FM set mode. e Push [DNM] or [LUP] to select the offset frequency item. •“duP” and selected band (144/430(440)/1200) appear. r Rotate the tuning dial to set the desired tone fre- quency. t Push [FM] to exit from the FM set mode. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I SSB mode operation q Push [M/S•BAND] to select the desired frequency band. w Push [SSB/CW] to select USB or LSB mode. •Push [SSB/CW] for 1 sec. to switch between USB and LSB when either the USB or LSB has been selected. e Rotate the tuning dial to set the desired frequency. r Push [PTT] to transmit and speak into the micro- phone at a normal voice level. t Rotate [MIC GAIN] so that the MAIN band indicator periodically lights red brightly. •The brightness increases when the ALC is activated. y Release [PTT] to receive. Tuning dial [SSB/CW] [M/S•BAND] [TRANSMIT] [MIC GAIN] I Speech compressor The speech compressor increases average RF output power, improving signal strength and readability in SSB. The IC-910H has a built-in, low-distortion speech compressor circuit. ➥Push [COMP] to turn the speech compressor ON and OFF. •Either USB or LSB should be selected. •“COMP” indicator appears when the speech compres- sor is activated. ◊Compression level setting q Select USB or LSB mode. w Preset the transceiver as follows: [COMP] function : OFF [RF POWER] control : Max. counterclockwise e Transmit at your normal voice level. r Adjust the [MIC GAIN] control so that the MAIN band indicator periodically lights red brightly whether or not you speak softly or loudly. t Push [COMP] to turn the speech compressor ON. y Push [SET] then [COMP] to enter the COMP set mode. u Rotate the tuning dial to adjust the compression level to the point where the maximum value and the MAIN band indicator brightness does not increase, whether or not you speak softly or loudly. •When the MAIN band indicator continuously lights red with increased brightness, your transmitted voice may be distorted. •It’s a good idea to adjust the compressor level by moni- toring with an other transceiver or receiver, if you have one, or with an other station. i Push [COMP] to exit the COMP set mode. [MIC GAIN] [COMP] MAIN band LED lights in red while transmitting. ALC indicator While transmitting, the MAIN/SUB band indicator shows the ALC condition. Brightness increases more than usual when the ALC function is activated. VOX function The VOX (Voice-operated Transmission) function is available for switching between transmit and receive with your voice. See p. 33 for details. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Split frequency operation Split frequency operation allows you to transmit and receive on two different frequencies in the same fre- quency band. Split frequency operation uses 2 fre- quencies, one in VFO A and the other in VFO B. q Set a receive frequency in VFO mode. •Either VFO A or VFO B can be used. w Push [A=B 2] for 1 sec. •The undisplayed VFO contents are cleared and equal- ized to the displayed frequency. e To change the receive frequency, rotate the tuning dial. r To replace the transmit and receive frequencies, push [A/B 3]. t To change the transmit frequency, rotate the tuning dial while pushing [CHECK 7]. y Push [SPLIT]. •“SPLIT” indicator appears. •Now you can receive on the displayed VFO and transmit on the undisplayed VFO. •To monitor the transmit frequency, push [CHECK 7]. u Push [SPLIT] to cancel the split frequency opera- tion. •“SPLIT” indicator disappears. Cross mode communication can be performed using the split function. (e.g. USB and CW) [A=B 2] [A/B 3] [SPLIT] [TRANSMIT] USB USB SPLIT SPLIT VFO B USB USB VFO B USB USB VFO A I Full duplex operation The MAIN and SUB bands are activated indepen- dently, therefore, simultaneous transmission and re- ception in different frequency bands are possible. q Push [M/S•BAND] to select the desired frequency band for transmission. •Push [V/M 1] to select VFO or memory mode, if desired. •Push [SSB/CW] or [FM] to select the desired operating mode. w Rotate the tuning dial to set the desired frequency. •Direct frequency input from the keypad is also available. e Push [SUB] to enable the SUB band access. •Push [M/S•BAND] for 1 sec. to select the desired fre- quency band, if desired. (when the optional UX-910 is installed.) •Push [V/M 1] to select VFO or memory mode, if desired. •Push [SSB/CW] or [FM] to select the desired operating mode. r Push [PTT] to transmit. •SUB band mute function The SUB band mute function mutes receiving audio from the SUB band while transmitting. q Push [SET] then [TRANSMIT] to enter the TRANS- MIT set mode. w Push [DN M] or [L UP] to select the SUB band mute item. •“Audio” is displayed. e Rotate the tuning dial to turn the SUB band mute function ON and OFF. •Push [M-CL 5] for 1 sec. to return to the default setting. r Push [TRANSMIT] to exit from the TRANSMIT set mode. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Connections for CW Before operating in CW, select the paddle type using the SSB/CW set mode. q Push [SSB/CW] to select CW mode. •“CW” indicator appears. w Push [SET] then [SSB/CW] to enter the SSB/CW set mode. e Push [DN M] or [L UP] to select the paddle type item. •“PAddLE” is displayed. r Rotate the tuning dial to select the paddle type. •Push [M-CL 5] for 1 sec. to return to the default setting. t Push [SSB/CW] to exit the SSB/CW set mode. I CW mode operation q Connect a paddle or straight key as above. w Push [M/S•BAND] to select the desired frequency band. e Push [SSB/CW] to select CW mode. •Push [SSB/CW] for 1 sec. to select CW narrow mode after the CW mode selection when the optional CW nar- row filter, FL-132 (for MAIN band) or FL-133 (for SUB band), is installed. r Rotate the tuning dial to set the operating fre- quency. t Push [TRANSMIT] to set the transceiver to transmit mode. •The MAIN band indicator lights red. y Operate the paddle or key to transmit the CW sig- nal. u Push [TRANSMIT] to return to receive mode. Tuning dial [SSB/CW] [M/S•BAND] [TRANSMIT] CW Paddle Straight key Microphone [KEY] jack [MIC] connector CW paddle with normal polarity (default) CW paddle with reverse polarity CW paddle use as bug-key Electronic keyer OFF (straight key) Substitute paddle function (microphone [UP]/[DN]) NOTE: A stereo plug must be used even when a straight key is used. See page 12 or 15. NOTE: [UP]/[DN] keying does not function while pushing [PTT] on the microphone. Push [TRANS- MIT] on the front panel or use the semi break-in function in this case. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

◊Setting keying speed q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DNM] or [LUP] to select the keying speed item. •“SPEEd” is displayed. e Rotate the tuning dial to adjust the keying speed to the desired speed. •Keying speed can be selected from 6–60 wpm. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. ◊Setting semi break-in function q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DNM] or [LUP] to select the semi break-in item. •“br-In” is displayed. e Rotate the tuning dial to turn the semi break-in func- tion ON and OFF. •Push [M-CL 5] for 1 sec. to return to the default setting. r Push [DNM] or [LUP] to select the delay time item. •“dELAy” is displayed. t Rotate the tuning dial to set the delay time to the desired time period. •Delay time can be selected from 2.0–13.0 sec. in 0.1 sec. steps. •Push [M-CL 5] for 1 sec. to return to the default value. y Push [SSB/CW] to exit the SSB/CW set mode. ◊Setting keying weight q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DNM] or [LUP] to select the keying weight item. •“rAtio” is displayed. e Rotate the tuning dial to adjust the keying weight ratio to the desired level. •Keying weight ratio can be selected from 1:1:2.8 to 1:1:4.5. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. ◊Setting CW pitch q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DNM] or [LUP] to select the CW pitch item. •“Pitch” is displayed. e Rotate the tuning dial to adjust the CW pitch to the desired pitch. •CW pitch can be adjusted within 300–900 Hz range. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. ◊Setting side tone q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DNM] or [LUP] to select the side tone item. •“SidE-t” is displayed. e Rotate the tuning dial to adjust the side tone level to the desired level. •Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. KEYING WEIGHT EXAMPLE: Morse code “K” DASH Weight setting: 1:1:3 (default) Weight setting: Adjusted DASH DOT (Fixed*) Adjustable range SPACE (Fixed*) *SPACE and DOT length can be adjusted with the keying speed only. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

The IC-910H has 106 memory channels (99 for regu- lar, 6 scan edges and 1 call) and they are equipped for each frequency band for storing the most often used frequencies and operating mode, as well as tone fre- quency, offset frequency, etc. I Operation on a memory channel Frequency and mode, etc., can be changed in a mem- ory channel. However, they will be cleared if [MW 4] is not pushed. ◊Memory channel selection q Push [V/M 1] to select memory channel mode. •“MEMO” indicator appears. w Push [DNM] or [LUP] to select the desired mem- ory channel. •Memory channel changes continuously while holding [DNM] or [LUP]. •The tuning dial rotation while pushing [F-INP ENT] also selects memory channel. e Push [V/M 1] to return to VFO mode. ◊During VFO mode operation By pushing [DNM] or [LUP] during VFO mode opera- tion, memory channel is also selectable. However, the frequency readout does not change in this case, only the memory channel number changes. FM VFO A MEMO FM MEMO USB USB Select memory mode Select memory channel [UP ∫] [DN √] Memory Channel 1–99 1A/1b–3A/3b C Description Regular memory channels. Programs op- erating frequency, mode, subaudible tone activity with frequency and split/duplex conditions. Scan edge channels. Programs edge fre- quencies for programmed scan. Call channel recalls a specified fre- quency on the instant. Programs operat- ing frequency, mode, etc., and is avail- able for each band, independently. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Memory channel programming can be performed ei- ther in VFO mode or in memory mode. q Set the desired operating frequency and mode in VFO mode. •Push [V/M 1] to select VFO mode, if required. •Tone frequency, offset frequency, etc., can also be pro- grammed. •Input the frequency from the keypad Push [F-INP ENT] ⇒[1] ⇒[4] ⇒[4] ⇒[.] ⇒[2] ⇒[6] ⇒[8] ⇒[F-INP ENT] w Push [DNM] or [LUP] to select the desired mem- ory channel to be programmed. e Push [MW 4] for 1 sec. to program the displayed frequency and operating mode into the memory channel. To check the programmed contents, push [V/M 1] to select memory mode. FM VFO A USB USB VFO A USB USB USB USB VFO A VFO A Select desired memory channel. Beep tones sound. Set desired frequency and mode. I Programming in memory mode q Push [V/M 1] to select memory mode. w Push [DNM] or [LUP] to select the desired mem- ory channel to be programmed. •The tuning dial rotation while pushing [F-INP ENT] also selects memory channel. e Set the desired operating frequency and mode in the memory mode. •Tone frequency, offset frequency, etc., can also be pro- grammed. •Set the desired operating frequency using with the key- pad when programming into blank channels. The tuning dial rotation for frequency setting cannot be performed when a blank channel is selected. •Input the frequency from the keypad Push [F-INP ENT] ⇒[1] ⇒[4] ⇒[4] ⇒[.] ⇒[1] ⇒[6] ⇒[4] ⇒[F-INP ENT] r Push [MW 4] for 1 sec. to program the displayed frequency and operating mode into the memory channel. MEMO FM MEMO USB USB MEMO USB USB MEMO USB USB Set desired frequency and mode. Beep tones sound. Select desired memory channel. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Blank channels Memory channels 6–99 are blank channels by factory default. They have no contents programmed. When a blank channel is selected, the “BLANK” indi- cator appears and the frequency band is displayed 2 sec. after the selection. ◊Programming a blank channel q Push [V/M 1] to select VFO mode. w Set the desired operating frequency, mode, etc. e Push [MW 4] for 1 sec. to program the memory channel. •“BLANK” indicator disappears. MEMO BLAN ANK MEMO BLAN ANK Operating band appears after 2 sec. “--430-” appears while in 430 MHz band. “-1200-” appears while in 1200 MHz band. I Frequency transferring The frequency and operating mode in a memory chan- nel can be transferred to the VFO. Frequency transferring can be performed in either VFO mode or memory mode. ◊Transferring in memory mode This is useful for transferring frequency and operating mode while operating in memory mode. When you have changed the frequency or operat- ing mode in the selected memory channel: •Displayed frequency and mode are transferred. •Programmed frequency and mode in the memory channel are not transferred, and they remain in the memory channel. q Push [DNM] or [LUP] to select the memory chan- nel to be transferred in memory mode. •And, set the frequency or operating mode if required. w Push [M≈V 6] for 1 sec. to transfer the frequency and operating mode. •Displayed frequency and operating mode are transferred to the VFO. e Push [V/M 1] to return to VFO mode. ◊Transferring in VFO mode This is useful for transferring programmed contents to VFO. q Push [V/M 1] to select VFO mode. w Push [DNM] or [LUP] to select the memory chan- nel to be transferred. •“BLANK” appears if the selected memory channel is a blank channel. In this case transferring is impossible. e Push [M≈V 6] for 1 sec. to transfer the frequency and operating mode. •Transferred frequency and operating mode appear on the frequency readout. MEMO USB USB MEMO USB USB USB USB VFO A Beep tone sounds. Select VFO mode. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Any unnecessary memory channels can be cleared. The cleared memory channels become blank chan- nels. q Push [V/M 1] to select memory mode. w Push [DNM] or [LUP] to select the desired mem- ory channel to be cleared. e Push [M-CL 5] for 1 sec. to clear the contents. •The programmed frequency and operating mode disap- pear. •“BLANK” indicator appears. r To clear other memory channels, repeat steps w and e. MEMO USB USB MEMO BLAN ANK Operating band appears after 2 sec. MEMO BLAN ANK Beep tone sounds. I Call channel The call channel is a one-touch accessible channel for recalling your most-often-used frequency. The IC-910H has one call channel for each frequency band. ◊Call up a call channel q Push [M/S•BAND] or [SUB] to select the desired frequency band. w Push [CALL] to select the call channel. e Push [CALL] or [V/M 1] to return to previous display. ◊Call channel programming q Push [M/S•BAND] or [SUB] to select the desired frequency band. w Push [CALL] to select the call channel. e Enter the desired frequency using the keypad. e.g.; When programming 145.8200 MHz. Push [F-INP ENT] ⇒[1] ⇒[4] ⇒[5] ⇒[.] ⇒[8] ⇒ [2] ⇒[F-INP ENT] •Select operating mode if required. r Push [MW 4] for 1 sec. to program the call channel. ◊Transferring call channel contents q Push [M/S•BAND] or [SUB] to select the desired frequency band. w Push [CALL] to select the call channel. e Push [M≈V 6] for 1 sec. to transfer the call channel contents. FM USB USB VFO A BLAN ANK From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Memo pads The IC-910H has a memo pad function for each fre- quency band to store frequency and operating mode for easy write and recall. The memo pads are separate from memory channels. The default number of memo pads is 5, however, this can be increased to 10 in the memo pad set mode (p. 64) if desired. Memo pads are convenient when you want to memo- rize a frequency and operating mode temporarily, such as when you find a DX station in a pile-up, or when a desired station is busy for a long time and you want to temporarily search for other stations. Use the transceiver’s memo pads instead of relying on hastily scribbled notes that are easily misplaced. ◊Writing frequencies and operating modes into memo pads You can simply store the accessed readout frequency and operating mode by pushing [MPW 8]. When you write a 6th (or 11th) frequency and operat- ing mode, the oldest written frequency and operating mode are automatically erased to make room for the new settings. Each memo pad must have its own unique combi- nation of frequency and operating mode; memo pads having identical settings cannot be written. ◊Calling up a frequency from a memo pad You can simply call up the desired frequency and op- erating mode of a memo pad by pushing [MPR 9]. •Both VFO and memory modes can be used. •The frequency and operating mode are called up, starting from the most recently written. CW FM USB FM USB FM VFO A VFO or memory mode Memo pad contents CW FM USB FM USB VFO or memory mode Memo pad contents When [MPW 8] is pushed, “FM 145.9200 MHz” is programmed and the oldest memo pad is cleared. Cleared FM VFO A From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Scanning searches for signals automatically and makes it easier to locate new stations for contact or lis- tening purposes. The IC-910H has several scan types; programmed scan, memory scan and mode select scan. The scanning operation can be performed indepen- dently for MAIN and SUB band. And to search a sub- audible tone frequency for a repeater frequency, a tone scan is also available. I Preparation •Squelch condition Set the [RF/SQL] control as for regular operation. •When receiving a signal •Scan pauses for 10 sec. when receiving a signal, then resumes. •When a signal disappears while scan is paused, scan resumes approx. 3 sec. later. •Scan resume ON/OFF You can select the scan to resume or cancel when re- ceiving a signal, in the scan set mode. Scan resume ON/OFF must be set before operating a scan. See de- tails described at right for ON/OFF setting. •Scan start/stop operation Push [SCAN .] to start and cancel scanning. •Scan speed Scan speed can be selected from 2 levels, high (de- fault) or low, in the scan set mode. See details de- scribed at right. •Setting scan resume condition q Push [SET] then [SCAN .] to enter the scan set mode. w Push [DNM] or [LUP] to select the scan resume item. •“SC-rES” is displayed. e Rotate the tuning dial to select scan resume condi- tion from ON and OFF. •“ON”: scan resumes, “oFF”: scan cancels •Push [M-CL-5] for 1 sec. to return to the default setting. r Push [SCAN .] to exit from the scan set mode. •Setting scan speed q Push [SET] then [SCAN .] to enter the scan set mode. w Push [DN M] or [L UP] to select the scan speed item. •“SC-SPd” is displayed. e Rotate the tuning dial to select scan resume condi- tion from HI and Lo. •Push [M-CL-5] for 1 sec. to return to the default setting. r Push [SCAN .] to exit from the scan set mode. MEMORY SCAN Repeatedly scans all programmed memory channels. This scan operates in memory mode. M-CH 1 M-CH 5 M-CH 2 M-CH 3 M-CH 4 M-CH 6 M-CH 7 M-CH 99 Call channels and scan edge channels are not scanned. Blank PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies (scan edge memory channels 1A/2A/3A and 1b/2b/3b). This scan operates in VFO mode. Scan starts from the displayed frequency or the lower scan edge frequency. Scan Scan edge (1A/2A/3A) Scan edge (1b/2b/3b) Jump MODE SELECT SCAN Repeatedly scans all selected mode memory channels. This scan operates in memory mode. FM FM USB FM CW USB FM FM From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Scans specified frequency range, programmed in the memory channel 1A/1b, 2A/2b and 3A/3b. Before start- ing the programmed scan, scan edges should be pro- grammed in these channels. ◊Selecting scanning range q Push [M/S•BAND] or [SUB] to select the desired frequency band to be scanned. w Push [SET] then [SCAN .] to enter the scan set mode. e Push [DNM] or [LUP] to select the programmed scan item. •“P-SCAn” is displayed. r Rotate the tuning dial to select the desired scanning range from 1A-1b, 2A-2b and 3A-3b. •Push [M-CL 5] for 1 sec. to return to the default setting. t Push [SCAN .] to exit from the scan set mode. ◊Starting the programmed scan q Push [M/S•BAND] or [SUB] to select the desired frequency band to be scanned. w Push [V/M 1] to select VFO mode. e Select the desired operating mode. •The operating mode can also be changed while scan- ning. r Push [SCAN .] to start the programmed scan. •“SCAN” indicator flashes. •The tuning step setting is used for the scanning step. •1 kHz or 1 MHz tuning step can also be used as the scanning step. t Push [SCAN .] to cancel the scan. If the same frequency is programmed into the scan edge memory channel 1A and 1b, 2A and 2b or 3A and 3b, programmed scan does not start. FM VFO A 60dB SCAN S 1 3 5 7 9 20 40 Flashes while scanning wSelect mode. qSelect VFO mode. eStart. rStop. I Memory scan operation Scans programmed memory channels only. Blank channels and programmed scan edge channels (1A/1b, 2A/2b and 3A/3b) are not scanned. q Push [M/S•BAND] or [SUB] to select the desired frequency band to be scanned. w Push [V/M 1] to select memory mode. e Push [SCAN .] to start the memory scan. •“SCAN” indicator flashes. •Pushing [SPCH•LOCK] for 1 sec. during scan starts mode select scan and “LOCK” indicator appears. (p. 47) r Push [SCAN .] to cancel the scan. MEMO FM USBLSBCW N ATT P.AMP AFCNB FAGC 60dB SCAN S 1 3 5 7 9 20 40 SQL T- Flashes while scanning qSelect memory mode. wStart. eStop. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Scans the memory channels, desired operating mode is programmed, only. q Push [M/S•BAND] or [SUB] to select the desired frequency band to be scanned. w Push [V/M 1] to select memory mode. e Push [SSB/CW] or [FM] to select the desired oper- ating mode to be scanned. •The operating mode can also be changed during scan. r Push [SPCH•LOCK] for 1 sec. •“LOCK” indicator appears. t Push [SCAN .] to start the mode select scan. •“SCAN” indicator flashes. y Push [SCAN .] to cancel the scan. MEMO USB USB VF VFO A FM LOCK S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB SCAN S 1 3 5 7 9 20 40 Flashes while scanning wSelect mode. qSelect memory mode. e appears. rStart. tStop. LOCK I Tone scan The transceiver can detect a subaudible tone fre- quency in a received signal. By monitoring a signal that is being transmitted on a repeater input frequency, you can determine the tone frequency required to access the repeater. q Set the desired frequency or memory channel to be checked for a tone frequency. w Push [FM] to select FM mode. e Push [TONE] or [CALL•T-SQL] for 1 sec. to activate the subaudible tone. •“T” or “T-SQL” indicator appears. r Push [SCAN .] for 1 sec. to start the tone scan. •“SCAN” indicator flashes while scanning. •Scan stops when a subaudible tone is detected. •Scan becomes slower or quicker, respectively when the noise squelch is open or closed. t Push [SCAN .] for 1 sec. to cancel the scan. NOTE: The tone scan automatically changes tone frequency setting to the detected tone frequency. FM VFO A 60dB SCAN S 1 3 5 7 9 20 40 Flashes while scanning SQL T- qSelect FM mode. wStart. eStop. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

145 MHz band FUJI 3 (FO-29) Uplink Downlink 8 48 SATELLITE OPERATION I Satellite communications outline Both satellite mode B (435 MHz uplink, 145 MHz downlink) and mode J (145 MHz uplink, 435 MHz downlink) can be operated from the IC-910H, and mode L can be operated when the optional UX-910 1200 MHz BAND UNIT is installed. Satellite communications is possible only when a satel- lite is in view and its transponder is activated. I Satellite notes 1. NEVER set the output power too high. Too much power will shorten the satellite’s life. Set your transmit power so that your downlink sig- nal level is lower than the beacon’s signal level. 2. Confirm a satellite’s operating mode in advance through documentation (magazines, etc.) or via ap- propriate satellite tracking software. In the wrong mode, you cannot use the satellite even if you re- ceive its beacon signal. 3. Preamplifiers may be necessary to receive satellite signals. Optional AG-25, AG-35 and AG-1200 (for UX-910) are available to use with the IC-910H. (p. 16) 4. When you use a reverse tracking satellite in SSB mode, use the LSB for the uplink frequency and USB for the downlink frequency. •When using a normal tracking satellite in SSB mode, use USB for both the uplink and downlink frequencies. I Entering into the satellite mode Operating frequencies in satellite mode can be set both before and after entering into the satellite mode. Normal and reverse tracking are available. ◊Transferring the VFO frequency to the satellite VFO q Set the downlink frequency (receive) in the MAIN band. w Set the uplink frequency (transmit) in the SUB band. e Push [SATELLITE] for 1 sec. to transfer the fre- quencies, set in steps q and w, into the satellite VFO. •Satellite mode is automatically selected after transfer- ring. •“SATL” indicator with either “NOR” or “REV” indicator ap- pears. •VFO and memory mode indications are displayed in the SUB band (lower area) during satellite mode. [SATELLITE] for 1 sec. •Mode B operating diagram [Example]: FUJI 3 (FO-29), Mode B •Uplink frequency: 145.9000–146.0000MHz •Downlink frequency: 435.8000–435.9000 MHz •Tracking direction: Reverse •CW beacon frequency: 435.7950 MHz Orbit information Orbit information describes satellite location, reach- ing angles, etc. This information may be available in ham magazines or organization issues, such as from ARRL, RSGB handbook, etc. Appropriate satellite tracking software is also conve- nient. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

q Push [SATELLITE] to enter the satellite mode. •“SATL” indicator with either “NOR” or “REV” indicator ap- pears. w Push [V/M 1] to toggle satellite VFO and memory mode. •VFO or memory mode indicator is displayed in the SUB band (lower area). e Push [SCAN . Â] to enable the downlink frequency tuning. •Uplink frequency indication disappears. •Rotate the tuning dial to set the downlink frequency and push [SSB/CW] to select the operating mode. •Push [SCAN . Â] again after the tuning. r Push [SWP 0 Í] to enable the uplink frequency tuning. •Downlink frequency indication disappears. •Push [SWP 0 Í] again after the tuning. NOTE: To select the operating mode for the uplink, push [SUB] to enable the SUB band access. USB USB MEMO LSB SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 USB USB MEMO LSB SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 I Tracking selection •Push [F-INP ENT ] for 1 sec. to switch be- tween normal and reverse tracking. ◊Normal tracking Both downlink and uplink frequencies increase or de- crease in the same step simultaneously by tuning dial rotation. ◊Reverse tracking The downlink frequency follows the tuning dial rotation, however, the uplink frequency changes in the reverse direction to the tuning dial rotation in the same step. USB USB MEMO LSB NOR SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 Satellite mode indication Varies simultaneously [SATELLITE] [F-INP ENT] NOR↔REV From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Preparation q Decide on a usable satellite. w Confirm the approximate location of the satellite and operating mode (e.g. “B,” “J,” etc.) through docu- mentation (magazine, etc.) or via appropriate satel- lite tracking software. e Set the antenna direction for the desired satellite. r Select satellite mode on the transceiver. •Push [SATELLITE]. •Push [F-INP ENT ] for 1 sec. to select track- ing mode if desired. t Select operating mode. y Set the downlink frequency (MAIN band) to the bea- con frequency. •Refer to a ham magazine or book for detailed informa- tion. •Adjust the antenna direction so that the S-meter shows to its strongest level. •The S-meter level should be noted for transmit power adjustment during a loop test. u Perform a loop test. •Set the downlink frequency (MAIN band) to a vacant fre- quency within the satellite’s coverage. •Push [SWP 0 Í] then, set the uplink frequency (SUB band) while transmitting a single tone such as a whistle to find your downlink signal and monitor your own signal correctly. Push [SWP 0 Í] after setting. NOTE: To avoid excessive power, set the output power so that the downlink signal strength is lower than the beacon’s strength. i Set the desired frequency to begin your satellite communications. •Both the downlink and uplink frequencies are changed simultaneously. o When your downlink audio drifts (Doppler effect), push [SWP 0 Í] then rotate the tuning dial to ad- just the uplink frequency (SUB band) only. Push [SWP 0 Í] again after setting. •When a particular station’s audio is off frequency, use the RIT function (push [RIT]). !0 To exit the satellite operation, push [SATELLITE]. CONVENIENT: As the transceiver has 10 satellite memory channels, once set, desired satellite fre- quencies can be recalled instantly. NOTE: As the downlink (MAIN band) signal is ap- plied to the SUB band unit in-circuitry in satellite mode, an optional FL-133 CW NARROW FILTER is nec- essary to operate CW-N mode. USB USB MEMO LSB SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 USB USB MEMO LSB SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 USB USB MEMO USB SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 USB USB MEMO LSB NOR SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 Satellite mode indication Uplink (transmit) frequency Downlink (receive) frequency NOR↔REV Satellite Downlink Uplink (MAIN band) (SUB band) Reverse tracking type USB (or CW) LSB (or CW) Normal tracking type USB (or CW) USB (or CW) From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

When your own signal can be received with a loop test, satellite communication can be performed. q Rotate the tuning dial to re-tune the uplink fre- quency after pushing [SWP 0 Í], when shifting a frequency with the Doppler effect. •The downlink frequency readout (MAIN band) disap- pears. w Rotate the tuning dial to re-tune the downlink fre- quency after pushing [SCAN . Â], when the oper- ating station’s signal frequency is shifted. •RIT function can also be used for downlink frequency tuning within ±1 kHz range. I Satellite memory The IC-910H has 10 satellite memory channels to memorize both uplink and downlink frequencies and operating modes, etc. ◊Satellite memory selection q Push [SATELLITE] to enter the satellite mode. w Push [V/M 1] to select satellite memory mode. •“MEMO” indicator and memory channel number are dis- played beside the uplink frequency (SUB band) indica- tion. •Push [V/M 1] again to select satellite VFO. e Push [DN M] or [L UP] to select the desired satel- lite mode memory channel. •The channels 00–09 are selectable. •By pushing and holding either switch, the satellite mem- ory channel changes continuously. ◊Satellite memory programming q Select the desired satellite memory channel. •Push [SATELLITE] to enter the satellite mode. •Push [V/M 1] to select satellite VFO mode. •Push [DN M] or [L UP] to select the desired satellite mode memory channel. w Set the desired downlink frequency to the MAIN band and uplink frequency to the SUB band, as well as operating mode. •Push [SCAN . Â] for downlink tuning, push [SWP 0 Í] for uplink frequency tuning. •Push [SUB] before the operating mode selection when selecting operating mode for the uplink. e Push [MW 4] for 1 sec. to program the set contents to the satellite memory channel. •3 beep tones sound. NOTE: Tracking selection, normal or reverse, is not programmed in the satellite memory channels. USB USB MEMO LSB SATL REV S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 Select the desired satellite memory USB USB MEMO LSB NOR SATL S 1 3 5 7 9 20 20 40 40 60dB 60dB 60dB S 1 3 5 7 9 20 40 Satellite memory indication From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

◊Connections via [DATA] socket Use FM mode for 9600 bps operation. Use SSB or FM mode for 1200 bps operation. ◊Connections via [ACC(1)] socket or [MIC] connector Use FM mode for 9600 bps operation. Use SSB or FM mode for 1200 bps operation. q DATA IN SQL* PTT RX AUDIO GND TX AUDIO TNC w GND e PTT r DATA OUT Shielding cable q DATA IN SQL* PTT RX AUDIO GND TX AUDIO TNC w GND e PTT y SQ* t AF OUT Shielding cable •9600 bps connection •1200 bps connection * Connect the SQL line when required. [DATA] socket (Rear panel view) [DATA] socket (Rear panel view) * Connect the SQL line when required. y SQ* 1 2 3 4 5 6 7 8 A B C D E F* 1 2 3 4 5 6 7 8 A B C D E F* •Connection via [ACC(1)] connector •Connection via [MIC] connector TNC * Connect the SQL line when required. (Rear panel view) (Front panel view) A B C D F E AFSK output AF input PTT GND Squelch input SQL* PTT RX AUDIO (1200 bps) GND GND TX AUDIO I Functions for AFSK The IC-910H does not have an FSK mode for RTTY, AMTOR, PACKET, etc., however, you can operate these using AFSK in SSB or FM mode. The transceiver accepts data speed of up to 9600 bps. When using 9600 bps, set the transceiver to the 9600 bps data mode using the general set mode. (p. 57) When operating AFSK, connect external equipment to the DATA (MAIN or SUB) or ACC socket on the rear panel, or to the microphone connector on the front panel as in the diagram below. OPERATION NOTES FOR 9600 bps •Set the transceiver to 9600 bps data mode. -See p. 57. •Set AFSK/GMSK output level of the terminal unit to 0.4 V p-p (0.2 V rms). -When exceeding 0.5 V p-p (0.25 V rms), the trans- ceiver’s modulation limiter stops modulation. -At this time, the [RX/TX] indicator’s brightness fades. •AF output from the transceiver is continuous and is not cut by the squelch circuit. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Use FM mode for 9600 bps operation. Use SSB or FM mode for 1200 bps operation. I Operating frequency notes ◊Operating notes for RTTY and AMTOR RTTY or AMTOR operating frequency in LSB mode differs from the displayed frequency. [Your operating freq.] = [Displayed freq.] – 2125 Hz (when the frequencies of the RTTY demodulator in your TNC or TU are — mark = 2125 Hz and space = 2295 Hz). ◊Operating notes for PACKET PACKET operating frequency in LSB mode differs from the displayed frequency. [Your operating freq.] = [Displayed freq.] – 2125 Hz (when the frequencies of the PACKET demodulator in your TNC are — 2125 Hz/2315 Hz). ◊Frequency setting example for AFSK -When operating RTTY at 144.090 MHz: Set “LSB 144.092125 MHz” (if you use mark=2125 Hz and space=2295 Hz). -When operating PACKET at 144.110 MHz: Set “LSB 144.112215 MHz” (if you use 2115 Hz/2315 Hz). I AFSK operation Connect external equipment to either the [DATA] (MAIN or SUB) or [ACC(1)] socket as described on the previous page. Set the ACC socket using the general set mode in advance when you operate via the ACC socket. (See below.) q Push [M/S•BAND] to select the desired frequency band. w Push [FM] or [SSB/CW] to select the desired oper- ating mode. •LSB is normally used. •FM is used for PACKET. e Adjust the audio output level with [AF] control. •Use [RF/SQL] when required. r Adjust the desired RF output power. •When using the [MIC] connector for external equipment connection, the [MIC GAIN] control should be adjusted. t Select operating mode. y Control the transceiver from the connected PC or TNC (TU). IMPORTANT: •Remove the microphone from the [MIC] connector when operating below 1200 bps rate to protect from noise coming from the microphone. •During 9600 bps rate operation, noise signals from the microphone may not effect PACKET signals. However, PACKET signal transmission is inter- rupted when [PTT] is pushed. •Remove the ACC plug, or turn the TNC power OFF during phone operation (SSB or FM). The modula- tion input from the [ACC(1)] socket is always ap- plied to the modulation circuit. ◊Connections via front panel When connecting a TNC or Scan converter, etc. to the [MIC] connector, [MIC GAIN] and [AF] adjustments are required. The [MIC] connector accepts up to 1200 bps. Use SSB or FM mode for operation. [MIC GAIN] and [AF] control adjustments are re- quired. qSelect band. wSelect desired mode. eAdjust for max. detected level. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Setting the ACC socket When operating AFSK, set the specifications of the ACC socket to fit your TNC or scan converter in ad- vance. q Push [SET] for 1 sec. to enter the set mode. w Push [DN M] or [L UP] to select the 9600 bps data mode setting item, then rotate the tuning dial to turn the 9600 bps rate ON and OFF Push [SWP 0] again after setting. •“9600” is displayed. •9600 bps data rate is selected when ON, and a slower data rate is selected when OFF is selected. •Push [M-CL 5] for 1 sec to return to the default setting. e Push [L UP] to select ACC socket pins 5 and 6 set- ting item, then rotate the tuning dial to select from “nor” (normal) and “Sub” (sub). •“ACC P5.6” is displayed. •When “nor” (normal) is selected, the ACC socket (pins 5 and 6) outputs MAIN band signals. When “Sub” is se- lected, the ACC socket outputs SUB band signals. •Push [M-CL 5] for 1 sec to return to the default setting. NOTE: Select “nor” (normal) when operating data mode in satellite mode. r Push [L UP] to select the modulation signal input level setting item, then rotate the tuning dial to se- lect from “HI” and “Lo” (sub). •“ACC.t-AF” is displayed. •HI: 200 mV rms, Lo: 2 mV rms •Push [M-CL 5] for 1 sec to return to the default setting. •This setting is ignored when 9600 bps data mode (w) is selected and 1.0 V p-p is set as a fixed value. t Push [SET] to exit from the set mode. ◊Adjusting the transmit signal output from the TNC When setting the data transmission speed to 9600 bps, the data signal coming from the TNC is applied exclusively to the internal limiter circuitry to control the transmission. NEVER apply data levels from the TNC of over 0.6 V p-p, otherwise the transceiver automatically cancels the transmission. 1. When using a level meter or synchroscope, ad- just the TX audio output level (DATA IN level) from the TNC as follows. 0.4 V p-p (0.2 V rms): recommended level 0.2–0.5 V p-p (0.1–0.25 V rms): acceptable level 2. When NOT using a measurement device. qConnect the transceiver to a TNC. wEnter a test mode (“CAL”, etc.) to the TNC, then transmit some test data. eWhen the transceiver fails to transmit the test data or transmits sporadically (TX indicator does not appear or flashes): -Decrease the TNC output level until the trans- mit indicator lights continuously. When transmission is not successful even though the TX indicator lights continuously: -Increase the TNC output level. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Set mode is used for programming infrequently changed values or conditions of functions. The IC-910H has a regular set mode and additional 12 in- dependent set modes for simple condition changing. ◊Set mode operation q Push [SET] for 1 sec. to enter the general set mode. w Push [DN Z] or [UP Y] to select the desired item. e Set the desired condition using the tuning dial. •Push [M-CL 5] for 1 sec. to select a default condition or value. r Push [SET] to exit the set mode. ◊Independent set mode operation q Push [SET]. w Push 1 of following switches/keys to enter the inde- pendent set mode. [SPCH], [FM], [SSB/CW], [SCAN], [MPW], [COMP], [VOX], [TRANSMIT], [NR], [RIT], [ATT], [SWP] e Push [DN Z] or [UP Y] to select the desired item. r Set the desired condition using the tuning dial. •Push [M-CL 5] for 1 sec. to select a default condition or value. t Push the applicable switch, pushed in step w, or [SET] to exit the set mode. FM VFO A VFO A FM S 1 3 5 7 9 20 20 40 40 60dB 60dB S 1 3 5 7 9 20 40 60dB 60dB SCAN SCAN SCAN FM VFO A VFO A SET FM S 1 3 5 7 9 20 20 40 40 60dB 60dB S 1 3 5 7 9 20 40 60dB 60dB q w e r t Tuning dial Exit set mode. Push applicable key applicable Independent set mode appears. Select condition. Push applicable key or [SET] key. Push [SET] momentarily. applicable keys Select set mode item. q Push [SET] for 1 sec. General set mode appears. w e r Tuning dial Exit set mode. Select condition. Push applicable key or [SET] key. Select set mode item. •SET MODE FLOW CHART applicable From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

56 10 SET MODE Display backlight brightness Adjust backlight brightness for the function display to the desired level within 0 (dark) to 100 (bright) range. Beep tone Adjust key touch beep output level to the desired level within 0 (no output) to 100 (max. output) range. RF/SQL control assignment Assign [RF/SQL] control function from rF/SqL, Auto and SqL. •rF/SqL: RF gain and squelch controls are combined for SSB/CW mode. Acts as squelch control for FM mode. •Auto : Acts as either an RF gain or squelch control depending on operating mode. •SqL : Acts as squelch control for all modes. RF gain is set to maximum level in this setting. Peak hold function Turn the S-meter peak hold function ON or OFF. The peak level is indicated for approx. 0.5 sec. when this function is activated. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Select continuous changing speed with microphone’s [UP]/[DN] operation from high and low. Headphone audio Switch the audio output separation capability for the headphones ON and OFF. •on : The MAIN and SUB band audio is sepa- rated in right (MAIN) and left (SUB) chan- nels when using stereo headphones. •oFF : The MAIN and SUB band audio is mixed. Fine tuning indication Turn the fine tuning indication (10 and 1 Hz digit indi- cation) during the tuning dial rotation ON and OFF. Auto TS function Turn the auto TS function ON and OFF. This function temporarily changes tuning step when rotating the tuning dial quickly. The auto TS function automatically selects a 10 or 50 Hz tuning step, when 1 or 10 Hz tuning step is used for regular operation, respectively. 9600 bps data transmission Turn the 9600 bps data transmission capability ON and OFF. •on : For 9600 bps data transmission. •oFF : For the regular audio (or slower data) trans- mission only. 9600 9600 Tuning step selection HI Lo Below 1 kHz 50 steps/sec. 25 steps/sec. Above 1 kHz below 1 MHz 20 steps/sec. 10 steps/sec. 1 MHz or Memory Channel 5 steps/sec. 2.5 steps/sec. ACC socket Pin 5 and Pin 6 Select the band for output signals from the ACC socket pins 5 (AF) and 6 (SQL) from normal and sub. •nor : Outputs MAIN band’s signals. •Sub : Outputs SUB band’s signals. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Assign the ACC socket pin 8 action/connection from ALC and microphone up/down. •ALC : Inputs ALC signal. •ud : Inputs up/down signals from the microphone. ACC socket Pin 4/DATA socket Pin 1 Select modulation signal input level from high and low. •HI : High modulation signal level (200 mV rms) •Lo : Low modulation signal level (2 mV rms) ACC socket Pin 3 for 144 MHz band Switch the SEND signal output for 144 MHz band op- eration ON and OFF. ACC socket Pin 3 for 430(440) MHz band Switch the SEND signal output for 430(440) MHz band operation ON and OFF. ACC socket Pin 3 for 1200 MHz band Switch the SEND signal output for 1200 MHz band operation ON and OFF. Preamplifier controller for 144 MHz Switch the preamplifier control capability ON and OFF. When using the optional AG-25, ON must be se- lected. Otherwise, the preamplifier is never activated. DO NOT connect any equipment, such as an SWR or power meter, between the transceiver and pre- amplifier. In such case, the preamplifier may not activate properly. P.AMP P.AMP From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Switch the preamplifier control capability ON and OFF. When using the optional AG-35, ON must be se- lected. Otherwise, the preamplifier is never activated. DO NOT connect any equipment, such as an SWR or power meter, between the transceiver and pre- amplifier. In such case, the preamplifier may not activate properly. P.AMP P.AMP Preamplifier controller for 1200 MHz Switch the preamplifier control capability ON and OFF. When using the optional AG-1200, ON must be selected. Otherwise, the preamplifier is never acti- vated. DO NOT connect any equipment, such as an SWR or power meter, between the transceiver and pre- amplifier. In such case, the preamplifier may not activate properly. P.AMP P.AMP CI-V address To distinguish between equipment, each CI-V trans- ceiver has its own Icom standard address in hexa- decimal code. The IC-910H’s address is 60H. When 2 or more IC-910Hs are connected to an op- tional CT-17 CI-V LEVEL CONVERTER, select a different address for each IC-910H in the range 01H to 7FH. CI-V baud rate Select transfer rate for CI-V remote control from Auto, 300, 1200, 4800, 9600 and 19200 bps. CI-V transceive Transceive operation is possible with the IC-910H connected to other Icom transceivers or receivers. When “on” is selected, changing the operating fre- quency, operating mode, etc. on the IC-910H auto- matically changes those of connected transceivers (or receivers) and vice versa. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Offset frequency for 144 MHz Set the offset frequency for duplex (repeater) opera- tion within 0–10.00000 MHz range. This item is displayed when the 144 MHz band is ac- cessed, including the SUB band access capability. •Default value: 0.6000 FM Offset frequency for 430(440) MHz Set the offset frequency for duplex (repeater) opera- tion within 0–10.00000 MHz range. This item is displayed when the 430(440) MHz band is accessed, including the SUB band access capabil- ity. •Default value: 5.0000 FM Offset frequency for 1200 MHz Set the offset frequency for duplex (repeater) opera- tion within 0–100.00000 MHz range. This item is displayed when the 1200 MHz band is accessed, including the SUB band access capability. •Default value: 20.0000 FM Tone encoder frequency for 144 MHz (non-European versions) Select tone encoder frequency for accessing a re- peater, etc. from one of 50 available tone frequencies. This item is displayed when the 144 MHz band is ac- cessed, including the SUB band access capability. •Default value: 88.5 FM T Tone encoder frequency for 430(440) MHz (non-European versions) Select tone encoder frequency for accessing a re- peater, etc. from one of 50 available tone frequencies. This item is displayed when the 430(440) MHz band is accessed, including the SUB band access capability. •Default value: 88.5 FM T Tone encoder frequency for 1200 MHz (non-European versions) Select tone encoder frequency for accessing a re- peater, etc. from one of 50 available tone frequencies. This item is displayed when the 1200 MHz band is accessed, including the SUB band access capability. •Default value: 88.5 FM T From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Select tone squelch frequency from one of 50 avail- able tone frequencies. This item is displayed when the 144 MHz band is ac- cessed, including the SUB band access capability. •Default value: 88.5 FM -SQ SQL T Tone squelch frequency for 430(440) MHz Select tone squelch frequency from one of 50 avail- able tone frequencies. This item is displayed when the 430(440) MHz band is accessed, including the SUB band access capabil- ity. •Default value: 88.5 FM -SQ SQL T Tone squelch frequency for 1200 MHz Select tone squelch frequency from one of 50 avail- able tone frequencies. This item is displayed when the 1200 MHz band is accessed, including the SUB band access capability. •Default value: 88.5 FM -SQ SQL T One-touch repeater shift direction (non-European versions) Select shift direction for one-touch repeater function from DUP– and DUP+. DUP DUP FM DUP DUP FM Auto repeater function (U.S.A. and Korea versions) Turn the auto repeater function ON and OFF. To activate the auto repeater function, ON must be selected in this setting after programming the auto re- peater frequency range. (p. 34) U.S.A. version: •“on1” Activates duplex only. •“on2” Activates duplex and tone. •“oFF” Auto repeater function is turned OFF. Korea version: •“ON” Activates duplex and tone. •“OFF” Auto repeater function is turned OFF. FM FM FM center indicator Turn the FM center indication ON and OFF. When the indication is turned ON and the received signal is off-center in FM mode, the receive indicator (green) flashes. FM FM From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Squelch threshold Select the squelch threshold level from 12 and 13 o’- clock. •12 : The squelch closes around the 12 o’clock po- sition of the [SQL] control. •13 : The squelch closes around the 13 o’clock po- sition of the [SQL] control. Carrier frequency Adjust the carrier frequency for SSB (USB/LSB) mode operation within –200 to +200 Hz range in 10 Hz steps. LSB USB LSB USB CW pitch frequency Adjust the CW pitch frequency within 300 to 900 Hz range in 10 Hz steps. CW CW keying speed adjustment Adjust the built-in electric keyer keying speed to the desired level within 6 to 60 WPM range. CW CW Semi break-in Turn the semi break-in function ON and OFF. CW CW CW break-in delay Adjust the CW break-in delay time to the desired level within 2.0 to 13.0 sec. range in 0.1 sec. steps. CW CW From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Turn the relation of [AF] control for CW side tone out- put level ON and OFF. •on : CW side tone output level is adjustable via [AF] control adjustment. •oFF : CW side tone output level is fixed regard- less of [AF] control setting. CW CW CW side tone output level Adjust the CW side tone output to the desired level within 0 (no output) to 100 (maximum output) range. CW CW Key type Select the key type from normal, reverse, bug, OFF and microphone [UP]/[DN]. •n : Use built-in electronic keyer. •r : Use built-in electronic keyer with reversed polarity. •buG : Use built-in electronic keyer as bug key. •oFF : Use external electronic keyer or straight key. •ud : Use microphone’s [UP]/[DN] as a paddle. CW CW CW dot-dash ratio Adjust the CW dot-dash ratio to the desired level within 1:1:2.8 to 1:1:4.5 range. CW C/N type for 1200 MHz Select the C/N type for the 1200 MHz band operation from type 1 and 2. •tyPE 1 : Provides better characteristics for nearby in- terference in FM mode operation. •tyPE 2 : Provides lower noise level just around the signal in SSB/CW mode operation. This item is displayed only when the optional UX-910 is installed. USB USBLSB LSBCW FM From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

I Memo pad set mode Programmed scanning range Select the programmed scan range from 1A-1b, 2A- 2b and 3A-3b. •1A-1b : Scans within the range programmed in the memory channel 1A and 1b. •2A-2b : Scans within the range programmed in the memory channel 2A and 2b. •3A-3b : Scans within the range programmed in the memory channel 3A and 3b. SCAN SCAN Scan resume condition Select the scan resume condition from ON and OFF. •on : Scan resumes. •oFF : Scan cancels when a signal is received. SCAN SCAN Number of memo pad channels Select the number of memo pad channels available from 5 and 10. •5 : 5 memo pad channels can be used. •10 : 10 memo pad channels can be used. I Compressor set mode Compression level Adjust the compression level for the speech com- pressor to the desired level within 0–100% range. COMP MP Scanning speed Select the scanning speed from high and low. SCAN SCAN Scan type HI Lo Memory scan (Mode select) 20 CH/sec. 10 CH/sec. Prog. scan (TS<1 kHz) 50 steps/sec. 25 steps/sec. Prog. scan (TS>1 kHz) 20 steps/sec. 10 steps/sec. Tone scan 20 steps/sec. 10 steps/sec. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

VOX sensitivity Adjust the VOX sensitivity within 0–100% range. VOX VOX delay time Adjust the transmit-to-receive switching delay to the desired level within 0.0 sec. to 2.0 sec. range in 0.1 sec. steps. VOX I Attenuator set mode Attenuation level for 144 MHz Adjust the attenuation level to the desired level within 0–100% range for the 144 MHZ band operation. Attenuation level for 430(440) MHz Adjust the attenuation level to the desired level within 0–100% range for the 430(440) MHZ band operation. Anti VOX Adjust the anti VOX gain within 0–100% range. VOX From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Time-out timer Select the time period for the time-out timer function from OFF, 3, 5, 10, 20 and 30 min. PTT lock Turn the transmission inhibit capability ON and OFF. Any control for transmission is inhibited when this item is ON. SUB band mute Turn the SUB band audio mute function ON and OFF. The SUB band audio is muted while transmitting when this function is turned ON. SUB SUB From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Adjust the noise reduction level to the desired level within 0–15 for the 1200 MHz band operation. Adjust it to the level that noise signals are reduced, and received audio has no distortion. This item is displayed only when the optional UT-106 is installed. NR Sweeping interval Select the sweeping interval for the simple band scope function from 3, 5 and 10 sec. SWP 67 10 SET MODE I NR set mode Noise reduction level for 144 MHz Adjust the noise reduction level to the desired level within 0–15 for the 144 MHz band operation. Adjust it to the level that noise signals are reduced, and received audio has no distortion. This item is displayed only when the optional UT-106 is installed. NR Noise reduction level for 430(440) MHz Adjust the noise reduction level to the desired level within 0–15 for the 430(440) MHz band operation. Adjust it to the level that noise signals are reduced, and received audio has no distortion. This item is displayed only when the optional UT-106 is installed. NR I SWP set mode From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

68 10 SET MODE RIT control assignment Assign [RIT] control function from rit, dIAL, SubdIAL and Sub-SFt. •rit : [RIT] control functions as RIT control. •dIAL : [RIT] control functions as tuning dial for MAIN band. •SubdIAL : [RIT] control functions as tuning dial for SUB band. •Sub-SFt : [RIT] control functions as IF shift control for SUB band. SHIFT control assignment Assign [SHIFT] control function from SFt, Sub-SFt, dIAL and SubdIAL. •SFt : [SHIFT] control functions as IF shift con- trol. •Sub-SFt : [SHIFT] control functions as IF shift con- trol for SUB band. •dIAL : [SHIFT] control functions as tuning dial for MAIN band. •SubdIAL : [SHIFT] control functions as tuning dial for SUB band. RIT indication Turn the RIT adjusting value indication ON and OFF. The value is displayed while adjusting when this func- tion is turned ON. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Output level Adjust the speech audio output level within 0 (no out- put) to 100 (maximum output) range. •Default value: 50 Announcement language Select the announcement language from English, Japanese and OFF. •EnG : Announces in English. •JPn : Announces in Japanese •oFF : No announcement. Announcement speed Select the announcement speed from high and low. •HI : Faster announcement. •Lo : Slower announcement. S-meter level announcement Turn the S-meter level announcement capability ON and OFF. •on : Announces S-meter level with the operating frequency. •oFF : Announces the operating frequency only. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Cooling fan J1801 for UT-102 connection SSB filter (MAIN band) CW-N filter (MAIN band) CW-N filter (SUB band) SSB filter (SUB band) MAIN unit PLL unit DSP unit PLL ref. signal (for UX-910) DSP unit DC power connector I Internal view •Top view — PA unit •Bottom view — PLL/MAIN unit From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

shown here when you want to install an optional unit or adjust the internal units, etc. q Remove the 5 screws from the top of the transceiver and the 4 screws from the sides, then lift up the top cover. w Turn the transceiver upside down. e Remove the 5 screws from the bottom of the transceiver, then lift up the bottom cover. CAUTION: DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver. Otherwise, there is a danger of electric shock and/or equipment damage. Disconnect the speaker cable. 71 11 OPTION INSTALLATIONS I Opening the transceiver’s case The UT-102 announces the accessed readout’s fre- quency, mode, etc. (S-meter level can also be an- nounced—p. 69) in a clear, electronically-generated voice, in English (or Japanese). ➥Push [SPCH] to announce the frequency, etc. q Remove the bottom cover as shown above. •Remove the UX-910 if you have installed it. (p. 73) w Remove the protective paper attached to the bot- tom of the UT-102 to expose the adhesive strip. e Plug UT-102 into J1801 on the MAIN unit as shown in the diagram at right. r Return the bottom cover to its original position. t Set the speech level, announcement language and S-meter announcement in the speech set mode (p. 69) if desired. UT-102 MAIN unit J1801 I UT-102 VOICE SYNTHESIZER UNIT ◊Opening the PA unit cover q Remove the 8 screws and grounding plate from the PA unit cover. w Remove fastening tape from the inside power cable. e Slide the PA unit cover as shown below. grounding plate From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

reduction and auto notch. Up to 2 DSP units can be installed for simultaneous DSP operation for both MAIN and SUB bands. When only 1 DSP unit is installed, DSP functions can be operated in either the MAIN or SUB band, whichever is being accessed. NOTE: The insulating soft case is not used with the IC-910H. RECOMMENDATION: When installing only 1 DSP unit, you can install into either front or rear panel side. However, installing a DSP unit into the front panel side may be easier and also safer. ◊Installing 1st DSP unit (front panel side) q Remove the top and bottom covers. •Remove the UX-910 if you have installed it. (p. 73) w Remove the shielding plate. e Remove the connection cable from J1751 on the MAIN unit. Connect the cable into J1 on the UT-106. r Plug the connection cable (P1) from the UT-106 to J1751 on the MAIN unit. t Plug the flat cable into J3 on the UT-106 and to J1771 on the MAIN unit. •Take care of the conductor direction. •Attach the Velcro tape to the UT-106 and PLL unit shielding plate. y Return the shielding plate, top cover and bottom cover to their original positions. ◊Installing 2nd DSP unit (rear panel side) q Remove the top and bottom covers. •Remove the UX-910 if you have installed it. (p. 73) w Remove the shielding plate. e Remove the connection cable from J1761 on the MAIN unit. Connect the cable into J1 on the UT-106. The cable between J1221 on the MAIN and J1 on the DSP unit, must be set in the groove of the chassis (see diagram below). Otherwise, the cable may be damaged when re- turning the shield plate to its original position. r Plug the connection cable (P1) from the UT-106 to J1761 on the MAIN unit. t Plug the flat cable into J3 on the UT-106 and to J1781 on the MAIN unit. •Take care of the conductor direction. •Attach the Velcro tape to the UT-106 and PLL unit shielding plate. y Return the shielding plate, top cover and bottom cover to their original positions. J1781 J1761 J3 J1 Shielding plate UT-106 MAIN unit PLL unit Take care of the conductor direction. P1 J1 Set cable into the groove. Take care of the conductor direction. J1771 J3 J1 J1751 Shielding plate UT-106 MAIN unit P1 PLL unit I UT-106 DSP UNIT From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

tion. FM, SSB (USB/LSB), CW and CW narrow mode operations are available. q Remove the bottom cover as shown in the diagram on p. 71. w Remove the antenna plate from the chassis using a standard screw driver. WARNING! NEVER attempt to remove the antenna plate using your finger, this may result in injury. e Connect the FFC (Flexible Flat Cable) of the UX-910 to J2 on the MAIN unit, DC power cable to the power connector (W305) from the PA unit and the coaxial cable to the J541 on the PLL unit. CAUTION NEVER catch the cables from the optional DSP unit(s) between chassis and the UX-910, this may damage the DSP unit(s) and/or transceiver. r Place the UX-910 using the supplied 4 screws. BE CAREFUL not to drop the supplied screws inside the transceiver. t Return the bottom cover to its original position. Antenna plate UX-910 Turn the flexible flat cable up under the UX-910. J2 MAIN unit Flexible flat cable UX-910 J541 J2 UX-910 PLL unit Power connector DC power cable Coaxial cable Flexible flat cable I UX-910 1200 MHz BAND UNIT From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

of the transceiver will be improved. q Remove the bottom cover as shown in the diagram on p. 71. •Remove the UX-910 if you have installed it. (p. 73) w Remove the 6 screws from the PLL shield cover, then lift up the PLL shield cover. e Disconnect the FFC (Flexible Flat Cable) from the DISPLAY unit and the connection cable connectors from J501 and J1051 on the MAIN unit. r Remove the 5 screws from the PLL unit, then lift up the PLL unit. t Unsolder the original reference crystal, then remove it. •The original reference crystal unit is soldered at both top and bottom sides of the PCB (Printed Circuit Board). y Install the CR-293 and solder the leads. u Return the PLL unit, PLL shield cover and bottom cover to their original positions. CR-293 soldering points Original crystal soldering point J501 Original crystal CR-293 J1051 Flexible flat cable Unsolder the original crystal. PLL shield cover I CR-293 HIGH STABILITY CRYSTAL UNIT From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

ter S/N (Signal-to-Noise), or to reject interference. To operate the CW narrow mode, an optional CW narrow filter is necessary. NOTE: For CW narrow mode during satellite opera- tion, the FL-133 (for SUB band filter) is necessary since the SUB band circuit is used for receiving, al- though the MAIN band display shows receive fre- quency. q Remove the bottom cover as shown in the diagram on p. 71. •Remove the UX-910 if you have installed it. (p. 73) w Disconnect the connection cable connectors from J501 and J1051 on the MAIN unit. e Remove the 2 clips. WARNING! BE CAREFUL not to pinch your finger with the clip. r Remove the 6 screws from the MAIN unit, then lift up the MAIN unit. t Install FL-132 or FL-133 to the specified position on the MAIN unit. y Solder then cut the leads, keeping 2–3 mm (1⁄8″) of the leads from the bottom of the MAIN unit. u Return the MAIN unit and clips to their original posi- tions. i Re-connect the connection cable connector to J501 and J1051 on the MAIN unit. o Return the bottom cover to the original position. FL-132 (MAIN) FL-133 (SUB) PLL unit MAIN unit J1051 J501 Clips I FL-132/FL-133 CW NARROW FILTER FILTER Passband width at –6 dB at –60 dB Built-in filter 2.3 kHz 4.2 kHz FL-132/133 500 Hz 1.34 kHz From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

problems which are not equipment malfunctions. If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your near- est Icom Dealer or Service Center. Power does not come on when [POWER] is pushed. No sounds comes from the speaker. Sensitivity is low. Received audio is dis- torted. Transmitting is impossible. Output power is too low. No contact possible with another station. Transmitted signals are distorted. Repeater cannot be ac- cessed. Programmed scan does not start. Memory scan does not start. Mode select scan does not start. No announcement when [SPCH] is pushed. The displayed frequency does not change properly. •DC power cable is improperly connected. •Fuse is blown. •Volume level is too low. •The squelch is closed. •The transceiver is in the transmitting condition. •The antenna is not connected properly. •The attenuator is activated. •The S-meter squelch is activated. •Incorrect sideband (USB/LSB) is selected. •Receiving an FM signal. •Noise blanker is activated. •Noise reduction is activated. •PTT lock function is activated. •[RF PWR] is set too far counterclockwise. •[MIC GAIN] is set too far counterclockwise. •Split frequency operation or duplex operation is activated. •RIT function is activated. •[MIC GAIN] to far clockwise. •Duplex operation is not activated. •No subaudible tone or incorrect tone frequency is selected. •VFO mode is not selected. •[RF/SQL] is assigned to RF gain and squelch is opened. •Memory mode is not selected. •No memory channels are programmed. •Mode select scan mode has not been selected. •Only one channel is programmed with the se- lected operating mode. •The voice synthesizer unit has not been in- stalled. •The announcement level is set to “0” or too low. •The announcement language is set to “oFF.” •The dial lock function is activated. •The internal CPU has malfunctioned. •Reconnect the DC power cable correctly. •Check the cause, then replace the fuse with a spare one. (Fuses are installed in the DC power cable and the internal PA unit.) •Rotate [AF] clockwise to obtain a suitable listen- ing level. •Rotate [RF/SQL] to 12 o’clock position to open the squelch. •Push [TRANSMIT] to receive or check the SEND line of an external unit, if desired. •Reconnect to the antenna connector. •Push [ATT] to turn the attenuator OFF. •Rotate [RF/SQL] to the position where the noise just disappears. •Switch USB and LSB by pushing [SSB/CW] for 1 sec. •Push [FM] to select FM mode. •Push [AFC/NB] to turn the noise blanker function OFF. •Set the noise reduction level in the NR set mode for maximum readability using [SET] and [AFC/NB•NR], or turn OFF the function by push- ing [AFC/NB•NR] for 1 sec. •Turn the PTT lock function OFF in the TRANSMIT set mode using [SET] and [TRANSMIT]. •Rotate [RF PWR] clockwise. •Rotate [MIC GAIN] clockwise. •Push [SPLIT] momentarily or for 1 sec. to turn the split or duplex function OFF. •Push [RIT] to turn the RIT function OFF. •Set [MIC GAIN] to a suitable level. •Push [SPLIT•DUP] for 1 sec. to turn duplex oper- ation ON. •Push [TONE] to activate the subaudible tone or select a suitable tone frequency in the FM set mode using [SET] and [FM]. •Push [V/M 1] to select VFO mode. •Reset [RF/SQL] control assignment and set it to the threshold point. •Push [V/M 1] to select memory mode. •Program desired frequencies into memory chan- nels. •Push [SPCH•LOCK] for 1 sec. on the desired op- erating mode programmed channel. •Program more than two channels with the desired operating mode. •Install the optional vice synthesizer unit, UT-102. •Set the announcement level to a suitable level in the SPCH set mode using [SET] and [SPCH]. •Set the announcement language to “Eng” (or JPn) in the SPCH set mode using [SET] and [SPCH]. •Push [SPCH•LOCK] to turn the lock function OFF. •Reset the CPU. – p. 77 p. 26 p. 26 pgs. 2, 13 – p. 29 p. 26 p. 23 p. 23 p. 30 p. 31 p. 66 p. 32 p. 32 p. 37 p. 27 p. 32 p. 34 p. 35 p. 21 p. 26 p. 40 p. 41 p. 47 p. 41 p. 71 p. 69 p. 69 p. 25 p. 77 From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

If a fuse blows or the transceiver stops functioning, try to find the source of the problem, and replace the dam- aged fuse with a new, rated fuse. CAUTION: DISCONNECT the DC power cable from the transceiver when changing a fuse. The IC-910H has 2 types of fuses installed for trans- ceiver protection. •DC power cable fuses ................................FGB 30 A •Circuitry fuse ................................................FGB 4 A DC POWER CABLE FUSE REPLACEMENT 30 A fuse CIRCUITRY FUSE REPLACEMENT The 13.8 V DC from the DC power cable is applied to all units in the IC-910H, except for the power ampli- fier, through the circuitry fuse. This fuse is installed in the PA unit. q Remove the top cover as shown on p. 71. w Remove the 11 screws from the PA shielding plate, then remove the plate. e Replace the circuitry fuse as shown in the diagram at right. r Replace the PA shielding plate and top cover. Circuitry fuse (4 A) I CPU resetting Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values. When first applying power or when the function seems to be displaying erroneous information, reset the CPU as follows: q Make sure the transceiver power is OFF. w While pushing [MW 4] and [M-CL 5], push [POWER] to turn power ON. •The internal CPU is reset. •The transceiver displays its initial VFO frequencies when resetting is complete. [POWER] [MW 4] [M-CL 5] From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

FE FE FE 60 E0 Cn Sc Data area FD Preamble code (fixed) Transceiver’s default address Controller’s default address Command number (see table at right) Sub command number (see table at right) BCD code data for frequency or memory number entry End of message code (fixed) OK MESSAGE TO CONTROLLER FE FE E0 60 FB FD Preamble code (fixed) Controller’s default address Transceiver’s default address OK code (fixed) End of message code (fixed) NG MESSAGE TO CONTROLLER FE FE E0 60 FA FD Preamble code (fixed) Controller’s default address Transceiver’s default address NG code (fixed) End of message code (fixed) IC-910H TO CONTROLLER FE E0 60 Cn Sc Data area FD Preamble code (fixed) Controller’s default address Transceiver’s default address Command number (see table at right) Sub command number (see table at right) BCD code data for frequency or memory number entry End of message code (fixed) q w e r t y u q w e r t y u 13 78 CONTROL COMMAND •CI-V connection example The transceiver can be connected through an optional CT-17 CI-V LEVEL CONVERTER to a personal computer equipped with an RS-232C port. The Icom Communi- cations Interface-V (CI-V) controls the following func- tions of the transceiver. Up to 4 Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an RS-232C port. See p. 59 for setting the CI-V condition using set mode. •Data format The CI-V system can be operated using the following data formats. Data formats differ according to com- mand numbers. A data area or sub command is added for some commands. I Remote jack (CI-V) information 9–15 V DC personal computer ct- 17 BC-25 (optional) IC-910H mini-plug cable From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Description Send frequency data for trans- ceive. Send mode data for trans- ceive. Read band edge frequencies. Read operating frequency data. Read operating mode data. Set operating frequency. Set LSB. Set USB. Set CW. Set FM. Select VFO mode. Select VFO A. Select VFO B. Equalize VFO A and VFO B. Switch VFO A and VFO B. Select MAIN VFO. Select SUB VFO. Select memory mode. Select memory channel. *1A=0100 1b=0101 2A=0102 2b=0103 3A=0104 3b=0105 Call=0106 Memory write. Transfer memory contents to VFO. Memory clear. Read duplex offset frequency. Set duplex offset frequency. Cancel scan. Start scan. Set scan resume OFF. Set scan resume ON. Turn the split function OFF. Turn the split function ON. Set simplex operation. Set DUP– operation. Set DUP+ operation. Set 1 Hz tuning step. Set 10 Hz tuning step. Set 50 Hz tuning step. Set 100 Hz tuning step. Set 1 kHz tuning step. Set 5 kHz tuning step. Set 6.25 kHz tuning step. Set 10 kHz tuning step. Set 12.5 kHz tuning step. Set 20 kHz tuning step. Set 25 kHz tuning step. Set 100 kHz tuning step. Turn attenuator OFF. Turn attenuator ON. Command Sub command 00 13 01 02 01 02 03 04 06 14 09 0A 0B 0C 0E 0F 01 15 02 02 12 22 40 +level data 41 16 42 43 44 46 47 4A 19 00 00 01 02 +level data 03 +level data 04 1A +level data 05 +level data 06 07 08 Description Announce all S-meter levels, displayed frequency and mode. Announce displayed frequency. Announce operating mode. [AF] level setting (0=max. CCW; 128=center; 255=max. CW). [RF GAIN] level setting (0=max. CCW; 255=max. CW). [SQL] level setting (0=max. CCW; 255=max. CW). [IF SHIFT] level setting (0=max. CCW; 128=center; 255=max. CW). Set noise reduction level (0=0%; 255=100%). Set CW pitch (0=300 Hz; 255=900 Hz). [RF PWR] level setting (0=max. CCW; 128=center; 255=max. CW). [MIC GAIN] level setting (0=max. CCW; 128=center; 255=max. CW). Key speed setting (0=6 wpm; 255=60 wpm). Set mic. compressor level (0=0%; 255=100%). Set break-in delay (0=2.0 sec; 255=13.0 sec.). Read squelch condition (open or closed). Read S-meter level. Set pre-amp (0=OFF; 1=ON). Set AGC (0=Slow; 1=Fast). Set noise blanker (0=OFF; 1=ON). Set noise reduction level (0=OFF; 1–15=ON). Set auto notch filter (0=OFF; 1=ON). Set subaudible tone (0=OFF; 1=ON). Set tone squelch (0=OFF; 1=ON). Set mic. compressor (0=OFF; 1=ON). Set VOX (0=OFF; 1=ON). Set break-in (0=OFF; 1=ON). Set AFC (0=OFF; 1=ON). Read the transceiver ID. Read/write memory channel. Set satellite memory. Set VOX gain level (0=0%; 255=100%). Set VOX delay (0=0 sec.; 20=2.0 sec.). Set anti-VOX (0=0%; 255=100%). Attenuation level setting (0=0%; 255=100%). Set RIT (0=OFF; 1=ON; 2=Sub dial). Set satellite mode (0=OFF; 1=ON). Set simple bandscope From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

(Unit: MHz) *1Optional UX-910 *2Guaranteed range is 144.0–148.0 MHz. *3Guaranteed range is 430.0–450.0 MHz. *4Guaranteed range is 1240.0–1300.0 MHz. •Mode : USB, LSB, CW, FM, FM-N* *Not available in 1200 MHz •No. of memory Ch. : 212 (99 regular, 6 scan edges, 1 calls for each band) plus 10 satellite memories) •Antenna connector : SO-239 (50 Ω; VHF) Type-N (50 Ω; UHF) •Usable temp. range : –10˚C to +60˚C; +14˚F to +140˚F •Frequency stability : Less than ±3 ppm (–10 to 60˚C; +14 to +140˚F) •Frequency resolution : 1 Hz minimum •Power supply : 13.8 V DC ±15% (negative ground) •Current drain (at 13.8 V DC; approx.): Transmit Max. power 23.0 A Receive Standby 2.0 A (3.0 A; UX-910) Max. audio 2.5 A (3.5 A; UX-910) •Dimensions : 241(W)×94(H)×239(D) mm (projections not included) 91⁄2(W)×311⁄16(H)×913⁄32(D) in •Weight (approx.) : 4.5 kg; 10 lb (5.35 kg; 11 lb 13 oz w/UX-910) •ACC 1 connector : 8-pin DIN connector •CI-V connector : 2-conductor 3.5(d) mm (1⁄8″) •DATA connectors : 6-pin mini DIN × 2 (for MAIN and SUB) •Transmitter •Output power (continuously adjustable): 144 MHz 5–100 W 430(440) MHz 5–75 W 1200 MHz 1–10 W (optional UX-910) •Modulation system : SSB Balanced modulation FM Variable reactance modulation •Spurious emission : 144/430(440) MHz More than 60 dB 1200 MHz More than 50 dB •Carrier suppression : More than 40 dB •Unwanted sideband : More than 40 dB suppression •Microphone connector : 8-pin connector (600 Ω) •KEY connector : 3-conductor 3.5(d) mm (1⁄4″) •Receiver •Receive system : VHF SSB, CW Single conversion superheterodyne FM Double conversion superheterodyne UHF SSB, CW Double conversion superheterodyne FM Triple conversion superheterodyne •Intermediate frequencies: (Unit: MHz) •Sensitivity : SSB, CW (10 dB S/N) Less than 0.11 µV FM (12 dB SINAD) Less than 0.18 µV •Squelch sensitivity (threshold): SSB, CW Less than 1.0 µV FM Less than 0.18 µV •Selectivity : SSB, CW More than 2.3 kHz/–6 dB Less than 4.2 kHz/–60 dB* FM More than 15.0 kHz/–6 dB Less than 30.0 kHz/–60 dB* FM-N More than 6.0 kHz/–6 dB Less than 18.0 kHz/–36 dB CW-N More than 0.5 kHz/–6 dB (w/FL-132 or FL-133) Less than 1.34 kHz/–60 dB* *Except 1200 MHz band •Spurious and image rejection ratio: 144/430(440) MHz More than 60 dB 1200 MHz More than 50 dB •AF output power : More than 2.0 W at 10% (at 13.8 V DC) distortion with an 8 Ωload •RIT variable range : 144/430(440) MHz ±1.0 kHz (SSB, CW) ±5.0 kHz (FM) 1200 MHz ±2.0 kHz (SSB, CW) ±10.0 kHz (FM) •IF SHIFT variable range : More than ±1.2 kHz •PHONES connector : 3-conductor 6.35(d) mm (1⁄4″) •Ext. SP connectors : 2-conductor 3.5 (d) mm (1⁄8″) /8Ω× 2 (for MAIN and SUB) 14 80 SPECIFICATIONS All stated specifications are typical and subject to change without notice or obligation. Version 144 MHz 430(440) MHz 1200 MHz*1 U.S.A. Tx: 144.0–148.0 Tx: 430.0–450.0 Tx: 1240.0–1300.0 Rx: 136.0–174.0*2 Rx: 420.0–480.0*3 Rx: 1240.0–1320.0*4 Europe 144.0–146.0 430.0–440.0 1240.0–1300.0 Australia 144.0–148.0 430.0–450.0 1240.0–1300.0 Sweden 144.0–146.0 432.0–438.0 1240.0–1300.0 Italy 144.0–146.0 430.0–434.0 1240.0–1245.0 435.0–438.0 1270.0–1298.0 MAIN BAND SUB BAND 1st 2nd 3rd 1st 2nd 3rd SSB 10.8500 — — 10.9500 — — CW 10.8491 — — 10.9491 — — FM 10.8500 0.455 — 10.9500 0.455 — SSB 71.2500 10.8500 — 71.3500 10.9500 — CW 71.2491 10.8491 — 71.3491 10.9491 — FM 71.2500 10.8500 0.455 71.3500 10.9500 0.455 SSB 243.9500 10.8500 — 243.9500 10.9500 — CW 243.9491 10.8491 — 243.9491 10.9491 — FM 243.9500 10.8500 0.455 243.9500 10.9500 0.455 144 MHz 430(440) MHz 1200 MHz From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

Unidirectional, electret microphone for base station operation. Includes [UP] and [DOWN] switches and a low cut function. SP-21 EXTERNAL SPEAKER Designed for base station operation. •Input impedance: 8 Ω •Max. input power: 5 W CT-17 CI-V LEVEL CONVERTER For remote transceiver control using a personal computer. You can change frequencies, operating mode, memory channels, etc. HM-12 HAND MICROPHONE Hand microphone equipped with [UP]/[DOWN] switches. Same as that supplied with the transceiver. CR-293 HIGH STABILITY CRYSTAL UNIT Frequency stability: ±0.5 ppm (0˚C to +60˚C) FL-132 (for MAIN band) FL-133 (for SUB band and satellite operation) CW NARROW FILTERS Have good shape factor and provide better CW reception during crowded band conditions. 500 Hz/–6 dB MB-23 CARRYING HANDLE Carrying handle, convenient for portable operation. UX-910 1200 MHz BAND UNIT Allows you additional all mode opera- tion on the 1200 MHz band. UT-106 DSP UNIT Allows AF DSP capabilities, including noise reduction and auto notch filter. AG-25 (for 144 MHz band), AG-35 (for 430(440) MHz band), AG-1200 (for 1200 MHz band) WEATHER-PROOF PREAMPLIFIERS External all-weather, mast mounting preamplifiers for com- pensating for coaxial cable loss. IC-MB5 MOBILE MOUNTING BRACKET Transceiver mounting bracket for mobile operation. SP-7 EXTERNAL SPEAKER Compact speaker for base station operation. UT-102 VOICE SYNTHESIZER UNIT Announces the receive frequency, mode and S-meter level in a clear, electronically-generated voice, in English (or Japanese). From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

mended that the forwards clearance in front of the an- tenna array is calculated relative to the EIRP (Effective Isotropic Radiated Power). The clearance height below the antenna array can be determined in most cases from the RF power at the antenna input terminals. As different exposure limits have been recommended for different frequencies, a relative table shows a guideline for installation considerations. Below 30 MHz, the recommended limits are specified in terms of V/m or A/m fields as they are likely to fall within the near-field region. Similarly, the antennae may be physically short in terms of electrical length and that the installation will require some antenna matching device which can create local, high intensity magnetic fields. Analysis of such MF installations is best considered in association with published guidance notes such as the FCC OET Bulletin 65 Edition 97-01 and its annexes relative to amateur transmitter instal- lations. The EC recommended limits are almost identi- cal to the FCC specified ‘uncontrolled’ limits and tables exist that show pre-calculated safe distances for differ- ent antenna types for different frequency bands. Fur- ther information can be found at http://www.arrl.org/. •Typical amateur radio installation Exposure distance assumes that the predominant ra- diation pattern is forwards and that radiation vertically downwards is at unity gain (sidelobe suppression is equal to main lobe gain). This is true of almost every gain antenna today. Exposed persons are assumed to be beneath the antenna array and have a typical height to 1.8 m. The figures assume the worst case emission of con- stant carrier. For the bands 10 MHz and higher the following power density limits have been recommended: 10–400 MHz 2 W/sq m 435 MHz 2.2 W/sq m 1296 MHz 6.5 W/sq m EIRP Clearance heights by frequency band Watts 10–2 m 70 cm 23 cm 13 cm and above 1 2.1 m 2 m 2 m 2 m 10 2.8 m 2.7 m 2.5 m 2.3 m 25 3.4 m 3.3 m 2.7 m 2.5 m 100 5 m 4.7 m 3.6 m 3.2 m 1000 12 m 11.5 m 7.3 m 6.3 m Forward clearance, EIRP by frequency band Watts 10–2 m 70 cm 23 cm 13 cm and above 100 2 m 2 m 1.1 m 0.7 m 1000 6.5 m 6 m 3.5 m 3 m 10,000 20 m 18 m 11 m 7 m 100,000 65 m 60 m 35 m 29 m In all cases any possible risk depends on the transmit- ter being activated for long periods. (actual recom- mendation limits are specified as an average during 6 minutes) Normally the transmitter is not active for long periods of time. Some radio licenses will require that a timer circuit automatically cuts the transmitter after 1–2 minutes etc. Similarly some types of transmitter, SSB, CW, AM etc. have a lower ‘average’ output power and the assessed risk is even lower. Versions of the IC-910H which display the “CE” symbol on the serial number seal, comply with the essential requirements of the European Radio and Telecommunication Terminal Direc- tive 1999/5/EC. This warning symbol indicates that this equip- ment operates in non-harmonised frequency bands and/or may be subject to licensing con- ditions in the country of use. Be sure to check that you have the correct version of this radio or the correct programming of this radio, to com- ply with national licensing requirement. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan Kind of equipment: VHF/UHF ALL MODE TRANSCEIVER This compliance is based on conformity according to Annex III of the directive 1999/5/EC using the following harmonised standards: i) Article 3.1a EN 60950 + A11 ii) Article 3.1b EN 301489-1 and EN 301489-15 (or ETS 300 684) iii) Article 3.2 EN 301 783-2 iv) v) Type-designation: iC-910h Signature Authorized representative name Place and date of issue T. Aoki General Manager Icom (Europe) GmbH Himmelgeister straße 100 D-40225 Düsseldorf Düsseldorf 21th Feb. 2001 Icom (Europe) GmbH Declare on our sole responsibility that this equipment complies the essential requirements of the Radio and Telecommunications Terminal Equipment Directive, 1999/5/EC, and that any applicable Essential Test Suite measurements have been performed. Version (where applicable): Version and frequency coverage *Optional UX-910 Version 144 MHz 430 MHz 1200 MHz* Europe (#02) 144.0–146.0 430.0–440.0 1240.0–1300.0 Sweden (#05) 144.0–146.0 432.0–438.0 1240.0–1300.0 Italy (#08) 144.0–146.0 430.0–434.0 435.0–438.0 1240.0–1245.0 1270.0–1298.0 •About AG-25, AG-35 and AG-1200 preamplifiers The use of IC-910H (#02, #05 and #08) in combination with AG-25, AG-35 and/or AG-1200 preamplifiers do not comply with the European harmonised standard regulations. Please do not use the IC-910H with these preamplifiers (AG-25, AG-35 and/or AG-1200) intended for the US, Asian, Oceanian and African markets. From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan A-5699H-1EX-r Printed in Japan © 2000 Icom Inc. „ GER „ AUT „ GBR „ IRL „ FRA „ NED „ BEL „ LUX „ ESP „ POR † ITA „ GRE † SWE „ DEN „ FIN < Intended Country of Use > † GER † AUT † GBR † IRL † FRA † NED † BEL † LUX † ESP † POR † ITA † GRE „ SWE † DEN † FIN < Intended Country of Use > † GER † AUT † GBR † IRL † FRA † NED † BEL † LUX † ESP † POR „ ITA † GRE † SWE † DEN † FIN < Intended Country of Use > IC-910H #05 (Sweden) IC-910H #02 (Europe) IC-910H #08 (Italy) From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library