I have a shunt fed tower which is 70 feet tall. It is 45G and has a 6L 20 on top with a 65 foot boom. It also has a 5L 15M Yagi with something like a 34 foot boom on the side at about 35 feet. For th
expect to see the results shown by the computer. I am suspicious of the model since I can change the vertical portion of the reflector to #10 wire instead of #18 wire and the max gain moves up about
All true. And thinner conductors have slightly higher inductance than fatter ones of the same length. 73, Dave AB7E _______________________________________________ ___________________________________
Granted and over simplification, but: Gain and F/B are determined by the phase angle and coupling between the elements. IOW the phase between the driven element and the reflector is such that the sig
An interesting thread... First, on the reflector - Make it resonant just below the band edge... I consider this the best point for the trade off between forward gain and FB ratio... e.g. for operati
There is a trap here waiting to bite the unwary. It's called ground resistance. Unless you have a very good ground system under the parasitic element you may not get enough current flow in the elemen