Pixel RF PR0-1 B Installation Instructions Manual
Text of the manual
RF PR0-1 B INSTALLATION INSTRUCTIONS
This active magnetic 1.oop antenna is designed for reception of signals over the range of 50 kHz to 30 MHz. It
includes a very high dynamic range low-noise preamplifier that can be mounted to a pole or any flat surface. The
preamplifier is designed for minimum intermodulation distortion in the presence of very high level signals that would
normally overload most amplifiers. For proper operation the preamplifier needs to be powered as shown in the
diagram shown in Figure 1 with the supplied power inserter and power supply that duplexes DC power on the same
cable carrying the preamplifi.er's output. The antenna should be oriented in the proper direction to maximize reception
of the desired signals (see details below). For best performance, the amplifier should be installed near the antenna to
avoid amplifying low level local interference that may enter the coaxial cable leading from the loop antenna to the
preamplifier's input.
Cautions:
This is a receive-only antenna. Do not connect it to a transmitter as it will be damaged and void your
warranty
Do not inadvertently connect the 20 VDC output of the power inserter to your receiver's antenna input as
your receiver may be damaged.
See attached cautions and warnings relative to lightning protection and antenna installation near high
voltage power lines.
When operating with nearby transmitting antennas, foHow the instructions below to avoid over-driving (or
damaging) your receiver's input or damaging the loop's low-noise amplifier.
Supplied Components (see Figure 16)
QTY
Description
Loop antenna
30 dB preamplifier
1i
L-bracket
2
Saddle clamps
2
U-bolts
lot Mounting Screws and washers
1
Coaxial- Sea package
1
24 VAC wall mount transformer
1
3 ft F-male to F-male jumper cable
1
1 ft F-male to F-male water-proof jumper cable
PL-259 Adapter
1
20 voe power inserter
1
Twin lead to F-female adapter
1
RCA- plug to RCA- plug cable and Y adapter
1
Grounding Lug
2
Nylon shoulder washers (.375 .inch)
2
Nylon flat washers (.25 inch)
1
Instruction Manual
Figure 1. RF PR0-1 B Active Loop Antenna Wiring Diagram
0
1 Ft Jumper Cable
27 dB
Preamplifier
Model RF30A
RG-6 Cable
(sold separately)
~
Power Inserter
Output
MOOEtP· 92A
POWEA
INSERTER
TO AM P
OUTPUT(20
VDC)
KEY
(see Figures 4 & 15)
TO
RADIO
180
Loop Antenna Pattern (looking down edge - on from above antenna)
CAUTION: Do not inadvertently connect 20 VDC
output of Power Inserter to Radio's antenna input.
The 20 VDC may damage the radio.
Pl-259
ADAPTER
RADIO
RECEIVER
I
t
Supplied Twln
24 VAC Wall Mount
Transformer
2
RADIO
RECEIVER
I
I------------------------------~
llSVAC
Alternate Interface for Radios with Twin
Lead Antenna Input
To KEY output of transceiver (optional)
Positioning the Antenna
This antenna has a directional 'Figure Eight' pattern with two deep 25- 30 dB nulls as shown in the diagram in Figure 1,
so for maximum daytime low-angle ground wave reception of a desired signal it should be oriented so that the
Imaginary plane In which the loop rests should be vertical to the ground and should, if extended, pass through the
general location of the signal's transmitter. There is a label on the antenna's upper junction box that shows the
proper pointing directions for maximum signals and the nulls. At night, for reception of high- angle sky waves
this antenna is less directional and the nulls are far less prominent.
For best results it should be located as far away as possible from any metal objects that could distort or shield the
antenna's reception like gutters, downpipes, metal plumbing and aluminum foil backed thermal insulation. It can be
positioned indoors or outdoors at least 5 feet above ground level, but for best results it should be as far as possible
from sources of interference such as AC power cables, cat 5 network cables, fluorescent lights, light dimmers.
computers and flat panel TV's. If located outdoors it can be camouflaged with shrubbery. Ideally a location outdoors
at least 20 feet away from any buildings will yield superior results. It can be mounted to any pole up to 2 inches in
diameter or attached to a flat surface or wall via the included L-bracket.
Use with N ear-By Transmitting Antennas
The antenna's low-noise preamplifier will withstand RF input levels of at least 30 dBm without failure. In tests with a
1 ,500 Watt transmit amplifier and a ¼ wave vertical transmitting antenna we found that the worst- case loop output
power into the preamp was 10 dBm when the antenna was located 25 ft from a vertical radiator and adjusted for
maximum coupling. This would indicate that at 25 ft separation there is a 20 dB safety margin. The other factor to
consider however is that with this kind of input signal (+1 O dBm) the preamplifier's 27 dB gain will cause it to saturate
and output 1.3 watts into the connected receiver. This high saturated output level is a byproduct of the excellent
intermodulation distortion performance of this preamplifier, but while most receivers have some sort of input protection
and possibly an internal transmit I receive switch that disconnects or shorts the input when transmitting, we cannot be
sure of what the radio's protection limits are and we don't want to be responsible for any damage that may result.
Hence included In the loop's power inserter is a relay that can be actuated by the "KEY" output of a typical
transceiver. When actuated, the relay disconnects power from the antenna's preamp. A green LED on the power
inserter is illuminated when power is applied to the preamp. An RCA-plug to RCA-plug cable is included with the
accessories to connect the KEY output of your transceiver to the RCA jack on the side of the power inserter. An RCA
Y-adapter is also included to enable connecting the KEY signal from your transceiver to other equipment. (See
Figures 2 and 3).
The relay's actuation circuit is designed to operate with a typical transceiver's 12 VDC " KEY" signal. The power
inserter has internal DIP switches that can be programmed to harmonize relay actuation with the proper state of the
transceiver's KEY signal. The default setting Is such that when the KEY output is "low'' (less than 0 .7 VDC) the relay
turns on and disconnects the preamp's power and the connection to your receiver is grounded through a resistor. If
the KEY signal is "high" or greater than 1.2 VDC the relay is not actuated and power is applied to the amplifier and
connection is made to your receiver. If the KEY input to the power inserter is left open or disconnected, then power is
always applied to the preamp. If your transceiver has a "KEY" output that goes high on transmit, then you can reverse
the polarity of the power inserter relay actuation by removing the power inserter's base plate and programming the
DIP switches on the PC board in accordance with the table shown in Figure 4.
A simplified schematic of the relay interface circuit is shown in Figure 5. Note that the KEY input is pulled up internally
via a 1 OK ohm resistor to the "high" state. If your transceiver's KEY output is not compatible with this interface circuit
and does not operate the power inserter relay, please contact our customer service (303 526 1965,
[email protected]) for assistance.
3
Figure 2. KEY Wiring for RF PR0-1 B Loop Antenna
To Loop Preamp
-
.
Typical Receiver
RF PR0-1 B Power Inserter
To Key Input on Transmitter Amplifier
(if you have one)
4
Figure 3. KEY Wiring for RF PR0-1 B Loop Antenna
Transceiver
KEY
Out
RF PRO-1B
POWER INSERTER
KEY
Y Adapter
5
Amplifier
KEY
In
Figure 4. Power Inserter DIP Switch Settings
Default
Settings
KEY INPUT
LOW
HIGH
LOW
HIGH
Switch 1
OFF
OFF
ON
ON
Switch 2
ON
ON
OFF
OFF
HIGH~ 1.2 voe LOW$ 0.7 V DC
Figure 5. Simplified Relay Interface Schematic
20 VDC ANTENNA POWER
OFF
ON
ON
OFF
To Loop Preamp
(+20VDC)
Output to Receiver
+J.-
20_V_DC
_ _..,/,--_-7_-- ---i i---
+-20---
For best results the cable run from the indoor power inserter to the external amplifier should be quad shielded RG-6 cable
with male F connectors on each end.
This cable is available with high-quality compression fit water-proof F-connectors pre-attached that have internal 0-rings
to keep moisture out.
Pixel part numbers:
C-50
50 feet
C-100 100 feet
C-150 150 feet
C-200 200 feet
Standard shield, high quality RG-6 cable can also be used; however the cable's ability to reject external interference is
reduced by typically 10 dB.
If the cable run from the power inserter to the antenna's preamplifier is longer than 200 feet, then RG-6 cable that has
a solid-core copper center conductor should be used such as Belden 1829AC to minimize DC loss.
Waterproof F - Connectors & Weather Proofing
The one foot long RG-6 jumper cable included with the accessories (see Figure 6) is used to connect the output of the
loop to Its preamp. This cable uses specially designed F-connectors to eliminate moisture ingress. A package of COAX
seal is supplied for additional weatherproofing. Follow the instructions on the side of the package.
Mounting to a Rotator
Figure 7 shows the antenna mounted to a rotator. Many users utilize this configuration to take full advantage of the
antenna's directional characteristics. Because of the antenna's low weight and wind loading a very low power rotator
can be used typical of the type used with TV antennas.
Mounting the Amplifier
Figures 8 thru 13 show the details for pole mounting the preamplifier. Nylon shoulder-washers and nylon flat washers are
used to e lectrically isolate the metal case of the preamplifier from the mounting pole. This is required to avoid ground
loops. The preamplifier has two small weep holes in its base to drain any condensation that may accumulate internally
and should be orientated in the proper vertical direction as indicated by an arrow on its case. (The preamplifier circuit
board is conformal coated to protect it from moisture and corrosion). A 1 foot jumper cable is supplied to connect the
output of the loop antenna to the input of the preamplifier. The preamplifier's output should be connected to the 20
voe output of the power inserter via the lead-in RG-6 cable.
7
One foot RG-6 Jumper Cable with water-proof F-connectors.
Connects Loop Antenna Output to Amplifier Input.
8
Figure 7. Loop Antenna Mounted on Rotor
Coax-Seal
Rotor ~
(Not Supplied)
9
Preamplifier
~----- Service Loop
~
RG-6 Cable to
Power Inserter
(Not Supplied)
Figure 8. Pole Mounting Details
P•~-,w•
.....,_.__.,._,,~
----~--·-
10
Figure 9. Pole Mounting Details (side view)
U-Bolts and /
Saddle Clamps
Nylon Shoulder
Washer
V\
a,
~
u
C ·-
00
~
Mast for rotor
mounting
11
Nylon Washer
Preamplifier
Figure 11. Amplifier Mounting Details
Nylon shoulder washers used to electrically isolate
preamplifer from mounting pole
13
The power inserter contains a highly filtered linear DC regulator with an internal self resetting fuse that provides
protection from short circuits. It is designed for indoor use only. The wall mount transformer provides 24 VAC for the
power supply.
Connection Diagram
Before applying any AC power, connect the antenna to the receiver as shown in Figure 1.
Be extremely careful to avoid inadvertently connecting the 20 VDC antenna output of the power inserter to
the antenna input on your receiver. Although the power inserter has a self-resetting internal fuse that will trip
at a current draw above 400 milliamps, this will put 20 VDC on the input of your receiver momentarily that
could damage some receivers.
Grounding
The loop antenna aluminum tubing should not be grounded. It is electrically isolated from its metal L-bracket mount via
nylon shoulder washers. Do not remove these. A grounding lug is provided (See Figure 14) that can be used to ground
the mounting pole and L-bracket for lightning protection.
Warranty and Customer Service
This product is warranted for defects in materials and labor for a period of 1 year from the date of shipping. If you
require customer service, you can contact us Monday through Friday from 8 :00 AM to 4 :00 PM (Mountain Time at
(303) 526 1965 or e-mail us at [email protected]
16
Figure 11. Grounding Lug Mounting Details
17
Grounding Lug for
Lightning Protection
Figure 15. Power Inserter
ANT Power Indicator
(illuminates when the preamp is
powered)
Connect to
Connect to KEY output of
Transceiver (Optional)
18
Connect to Receiver
Antenna Input
Master Power on/off
Figure 16. Supplied Accessories
Receiver
connect cable
Power Inserter
. .
..
-
t,
~
. -· -~
.
~ ..
---•--•H•
,,~
e
0
•
• ,.
.'...k!::t?"! 4 r
!'5
I i ~-
iu:a:,.wloj;,......,-~--...i;..._.... ___ Antenna Pream.:._.P _____ .._,:;,...,;....,...;..-..:.a..;;r........a
19
Magnetic Loop for Improved Reception and Noise Rejection
Model: RF PR0-1B (Receive-Only Antenna)
Shielded Active Broadband Magnetic Loop Antenna
38 inches
•
Unique Loop architecture provides enhanced performance
0
180
Figure 1. Loop Antenna Pattern (looking down)
edge - on from above antenna
•
Very low IMO, 27 dB Low-Noise Clifton Laboratories Norton Preamp insures good performance in both strong
and weak signal environments
•
Up to 30 dB rejection of locally radiated noise compared to whip antennas
•
Figure eight directivity and deep nulls to further reduce interference.
•
Useable coverage range: 50 kHz to 30 MHz
•
Rejects power line noise
•
Rugged construction, easily mounts to a pole or flat vertical surface, 38 inch dia. aluminum loop, supplied
with LNA, power inserter and DC power supply
•
No manual tuning necessary
•
No Home Owners Association problems; low profile, easy to camouflage and works at ground level
•
Modular design for easy installation and maintenance
•
Internal Transmit/ Receive Switch disconnects Antenna/ Preamp from receiver when transmitting
Made in the USA
NOT YOUR FATHER'S LOOP ANTENNA
Based on the work of Dr Carl Baum for the US Air Force his "Moebius Strip Shielded Magnetic Loop Antenna"
architecture outperforms much larger antennas.
Dr Baum was a Senior Scientist at the US Air Force Research Laboratory and is the recipient of several awards from
the IEEE (Institute of Electrical and Electronic Engineers) for his work. Originally developed for a classified US A ir
Force project involving the measurement of EMP (Electro Magnetic Pulse) from nuclear weapons, this design has
wide application to antennas for low- noise, interference-free radio reception over a wide frequency range. Pixel has
coupled this antenna with a custom made low-noise amplifier developed for Pixel by Clifton Laboratories w ith very
high intermodulation d istortion (IMD) specifications (OIP3 = +48 dBm, OIP2 > +100 dBm) that can operate without
saturating in high AM and FM broadcast band signal environments.
20
MAGNETIC LOOP ANTENNA ADVANTAGE
Most active antennas are the whip type and respond mainly to the electrostatic-field portion of an electro-magnetic radio
wave. The Magnetic Loop responds primarily to the magnetic-field and this ensures high rejection of nearby electric-fields. The
intensity of the electric field is usually higher than the magnetic-field when an antenna is close to interference sources such as
TVs, florescent lamps, power line wiring etc. By rejecting the electric-field there is a reduction in local interference compared to
other types of active and passive antennas. Interference reduction is further enhanced by the deep nulls of the antenna's
'Figure-Eight' directivity pattern (see Figure 1) that can be used to null out or reduce interference coming from a specific
localized direction.
INTERMODULATION
Some active antennas generate intermodulation products which can appear as spurious signals interfering with reception. This
interference or second and third order intermodulation is caused by non linearity in the amplifier producing signals which are
usually the sum and difference of strong AM or FM Broadcast stations and their harmonics. The RF PR0-18 Loop has been
specifically designed to reduce intermodulation products to a minimum. The third order intercept point is typically +48 dBm
(OIP3} and the second order intercept point is greater than +100 dBm (OIP2 typically 110 dBm). The 1 dB compression point of
this amplifier is + 27 dBm making the levels of the intermodulation products generally far below the atmospheric and man-
made noise.
ANTENNA DESIGN
The RF PR0-18 Loop Antenna consists of a rigid light-weight¾" diameter anodized aluminum 38 inch diameter loop and
a balanced broadband amplifier that is housed in a separate enclosure that can be mounted close to the antenna on its
mast or to any nearby flat surface. A 20 volt DC regulated power supply and power inserter unit are provided. The antenna
and amplifier have been designed to permit the use of low-cost 75 ohm cable (RG-6 quad-shield recommended, and
available separately). For best results the antenna should be positioned approximately 15 feet away from any buildings or
other sources of interference.
SUPPLIED COMPONENTS:
QTY
1
2
2
1 lot
1
1
Description
Loop antenna
27 dB preamplifier
L-bracket
Saddle clamps
U-bolts
Mounting Screws and washers
CoaxSeal package
24 VAC wall mount transformer
1
3 ft F-male to F-male jumper cable
1
1ft F-male to F-male water-proof jumper cable
1
PL-259 Adapter120 VDC power inserter
1
Twin lead to F-female adapter
1
RCA-plug to RCA-plug cable
1
Grounding Lug
2
Nylon shoulder washers (.375 inch)
2
Nylon washers (.25 inch)
1
RCA Y adapter
1
Instruction Manual
www.PixelSatRadio.com
[email protected]
303-526-1965
TECHNICAL INFORMATION
Frequency response: 50 kHz -30 MHz (Nominal Gain: 27 dB ±3 dB)
DC power: 20 volts at 240 mA
OIP3: typically +48 dBm
OIP2: > 100 dBm (typically 110 dBm)
1dB compression point: +27 dBm
NF: typically 2 dB (at 10 MHz)
Antenna Diameter: 38 inches
Antenna Weight: 3 lbs
21
....... i :>e~I--~
TE=c:;,-,,vc,~C,G'le .S
Pixel Technologies Warranty & Return Policy
WARRANTY
Seller warrants for a period of one (1) year from delivery unless a different period is stated on the face of the invoice that all
goods and their components are free from defects in workmanship, material, and design.
Setler warrants that all goods are of merchantable quality and are fit and suitable for the purposes advertised. Seller
warrants that all raw materials used in the Product are new materials.
For customers in the continental US Seller agrees to repair the goods or to replace any necessary parts at no charge to the
Buyer during the warranty period all at Seller's expense. All repairs or replacement parts shall be warranted for the greater
of twelve (12) months or the end of the original warranty period.
The warranty applies only to the Products that can be identified by the original, unaltered Pixel Technologies trademark,
trade name or logo affixed to them. Pixel Technologies does not warrant any product that is not manufactured by, for, or
without permission from Pixel Technologies.
This warranty does not cover any of the following conditions:
• Abuse, unreasonable use, mistreatment, or neglect
• Unusual physical or electrical stress, power fluctuations and lightning damage
• Damage caused by the equipment or system with which the Product is used
• Damage caused by modification or repair not made or authorized by Pixel
Technologies
In no case shall Pixel Technologies be liable for any incidental damage to equipment that the Product is connected to or
used with.
This warranty shall be null and void if the Buyer fails to follow the written instructions included with the Product.
Warranty Repair or Replacement
At the sole discretion of Pixel Technologies we will repair or replace any defective Product or part(s) at our expense.
To receive warranty repair or replacement parts contact:
Pixel Technologies
13200 W 43rd Drive.
Unit 201
Golden Co. 80403
303.526.1965
E-mail
[email protected]
Please have Model Number, purchase date, and where purchased available when contacting Pixel Technologies.
For Customers in the continental US replacement parts or items will be shipped to customer via FedEx ground service. If
customer requests replacement parts overnight or 2 day they will be billed the difference in shipping cost.
Defective parts must be returned to Pixel Technologies within 30 days of receipt of replacement parts using the procedure
outlined below or Pixel Technologies will bill the customer the retail cost of the replacement parts sent including all shipping
costs.
To return defective / replacement parts to Pixel Technologies;
Included in your replacement part(s) box there will be a Return label to Pixel Technologies. Reuse the original packaging
that you received your replacement parts in. Affix return label to box and call FedEx for a pick up or drop off at any FedEx
office or FedEx drop-off location. They can be found at;
www.fedex.com and select the orange "Locations" tab to find the closest drop-off location.
Call 1.800.Go.FedEx, (800) 463-3339 to arrange a pickup or find the closest drop-off location
OUTDOOR INSTALLATION WARNING
IMPORTANT SAFETY PRECAUTIONS
LIVES MAYBE AT RISK/ Carefully observe these instructions and any specia l instructions that
are included with the equipment you a re installing.
IMPORTANT: Look over the site before beginning and installation, and anticipate possible
hazards, especially the following:
CONTACTING POWER LINES CAN BE LETHAL. Make sure no power lines are anywhere
where possible contact can be made. Antennas, masts, towers, guy wires or cables may lean or
fall and contact these lines. People may be injured or killed if they are touching or holding any part
of equipment when it contacts electric lines. Make s ure there is NO possibility that equipment or
personnel can come into contact directly or indirectly with power lines
ASSUME THAT ALL OVERHEAD LINES ARE POWER LINES.
The horizontal d istance from a tower, mast or antenna. to the nearest power line should be at least
twice the total length of the masVantenna combination. This w ill ensure that the mast will not
contact power if it falls e ither during installation or later
TO AVOID FALLING. USE SAFE PROCEDURES WHEN WORKING AT HEIGHTS
ABOVE GROUND.
Select equipment locations that will a llow safe, s imple equipment installation.
Don't work a lone. A friend or co-worker can save your life if an accident happens.
U se approved non-conducting ladders and other safety equipment. M ake s ure all equipment
is in good repair.
If a tower or mast begins falling, don't attempt to catch it. Stand back and let it fall.
If anything, such as a w ire or mast does come into contact with a power line, DON'T TOUCH
IT OR ATTEMPT TO MOVE IT Instead, save your life by calling the power company.
Don·t attempt to erect antennas or towers on a windy day.
MAKE SURE ALL TOWERS AND MASTS ARE SECURELY GROUNDED, AND ELECTRICAL
CABLES CONNECTED TO ANTENNAS H AVE LIGHTNING ARR.ESTORS. This will he lp
prevent fire damage or human injury in case of lightning, static build up, or short circuit within
equipment connected to the antenna.
The base of the mast or tower must be connected directly to the building protective ground or
to one or more approved grounding rods, using 1 O AWG ground wire and corrosion- resistant
connectors.
Refer to the National E lectrical Code ANSI/NFPA 70, for information w ith regard to proper
grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna
discharge unit, size of grounding conductors, location of antenna-discharge unit, connection
to grounding e lectrodes. and requirements for the grounding electrode.
See opposite for Ground Lug installation instructions.
IF A PERSON COMES INTO CONTACT WITH ELECTRICAL POWER AND CANNOT MOVE:
DO NOT TOUCH THAT PERSON OR YOU MAY BE ELECTROCUTED.
Use a non-conductive dry board, stick or rope to push or drag them so they are no longer in
contact with e lectrical power.
Once they are no longer contacting e lectrical power, administer CPR if you are certified, and
make sure that emergency medical aid has been requested.
Ground Lug Installation for Pixel and QuadraBoost Antennas
AM /FM Antenna Mount
I
,I
I
•
•
L
~8
l
Install Ground Lug Here
Satellite Radio Antenna Mount
•
I
Install Ground Lug Here
IMPORTANT: Install lock
washer under lug to make
good electrical connection
between mount and lug
0
Ground lug and Lock Washer
QuadraBoost
Ground Lug
j