Diamond Antenna WD330S Operating Instructions

COMPACT SIZE WD330S OPERATING INSTRUCTIONS Thank yo” for purchasing the Diamond HF Dipole Antenna. Before using the antenna, please read care- fully these OPERATING INSTRUCTIONS to operate properly. SAVE THESE INSTRUCTIONS. The WD330S broadband dipole antenna is designed to provide optimum performance over a wide frequency range. and it is very easy to assemble. The usual requirements for multiple antennas or an anten- na tunes between the transceivers and antenna are elimi- nated by the unique broadband design. Installation Refer to the drawings on the opposite side of this sheet for suggested installations. For best performance, the antenna should be installed with the radiating elements in a horizon- tal (“Fiat Top”) configuration, and as high as possible. Theoretically, the directions of maximum radiation and reception are at right angles to the radiating elements, and this should be considered when planning installation. However, this radiation pattem is based on an ideal anten- na in free space, and may be considerably different in a practical situation near the ground and adjacent to other structures and power lines; some experimentation with mounting and orientation cari significantly improve perior- mance, Proximity of ground and neatby structures may also affect the feedpoint impedance of the antenna, SO rearrangement of the antenna could be required to achieve a good VSWR. transceiver. Key the transmitters with a steady carries and adjust the forward output power for approximately 20 watts. Switch the wattmeter to read reflected power measures in excess of 5 watts, the problem should be corrected before attempting to “se the antenna. Troubleshooting First check for broken. shorted or twisted wires, ground Lads or faulty connections in the feedline and connectors. Then consider reconfiguring or reorienting the antenna rel- ative to the ground or nearby structures. Specifications Frequency range Max.Power range Input impedance VSWR(typical) 2-26.6MHz 150 W PEP 50 cl 2:l from 2-18 MHz, 3:l above 16 MHz 10 meters Performance Verification The impedance match of the antenna should be verified prier to using the antenna with a transmitter, or if there is doubt about performance. Install a directional wattmeter between the antenna and the DAMCHI DENPA KOGYO CO., LTD. 445-l Konakai Nakadori Kawagoe. Saitama 3504022 Japan