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UNIQUE CB RADIO BEAM
BOTH SKIP & GROUND WAVE SIGNALS
Circular Polarization (CP) is an idea borrowed from FM and TV broadcasters, who were faced with the problem of getting out to both cars (vertical) and homes (horizontal). CP is basically a rotating, twisting radio wave containing properties of all polarization angles, including all those in between vertical and horizontal. (Such as skip signals, signals from moving mobile whips, or signals bounced off hills or buildings.) Regardless of the antenna type used, most CB signals change their polarization as soon as they bounce off an object. With CP, it doesnt matter. Youll get out better and hear better, even if the other station is using a conventional antenna.
The other big advantage of CP is its elimination of multipath fading. Youve probably experienced this as "ghosts" on your TV set when an airplane passed overhead. Or as fading when talking to a moving mobile. Since CP receives all polarization angles, it doesnt matter what happens to the other stations signal on its way to you. And when transmitting, the fact that your signal contains all types of polarization increases your chance of being heard by both local and skip stations. Finally, add to this the 7 dB beam effect. This is equivalent to a five-fold power increase! (A 4-watt CB sounds like 20 watts!)
Our plans include full details on mechanical assembly, matching, element dimensions, etc. And youll also get information on building a second type of CP antenna, as well as a 3-element Yagi beam antenna. Thats three antenna plans for the price of one!Published by:
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