|Amateur Wire Antennas|
The Alpha 6-160 is an HF J-Pole that covers 160 to 6 meters. A tuner (not supplied) is suggested for 160 and 80 meters. This stealthy antenna equals the performance of full-wave dipoles dedicated to a particular band. A combination of antenna designs, namely the J-Pole and Zepp along with matching network technologies, are utilized to achieve a resonant antenna design on 6, 10, 15, 20, & 40 meters and a fairly resonant pattern on 80 & 160 meters. We derive from the J-Pole the lengths of each wire pair, spacing of the wiring in their respective sheaths, size & number of the strands of the wire used. From the Zepp is the feeder type design, and although significant, is by no means the only factor in matching the antenna. A 4:1 UNUN utilizes a Matching Network at one end of the antenna. The weatherproof 4:1 UNUN allows for the antenna to be fed with 50 ohm coax at the antenna. This makes for an important design characteristic when feeding a tuner, as it keeps the RF voltages low at the feed point. The Matching Network then performs the final matching for resonance.
Alpha 6-160 Specifications
Frequency: 1.8 to 54 MHz
Configuration: Vertical, Inverted L, Horizontal
Power: 200 watts
Typical Bandwidth: 40m: 22kHz, 20m: 36kHz, 15m: 54kHz, 10m: 140kHz, 6m: 1.8MHz (1.5:1 or less)
Length: 75 feet
Weight: 1.5 lbs.
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