Hello all:
I have a three element Telrex 20 meter monoband (Yagi) beam at 75 feet. I successfully added two 15 meter elements in between the three 20 meter elements in the same plane and on the same boom as the 20 meter elements. As best I can measure, the addition of the 15 meter elements had no effect on the 20 meter beam. ( no detectable swr change) Both beams work very well.
So here's my question: I would like to remove the 15 meter elements and replace them with two elements for 30 meters, using a gamma match system. Will the 30 meter elements have a detrimental effect on the 20 meter beam?? If so, I can move them up the mast and use a boom just for this new beam. If I do that, what is the minimum seperation I should use?
Thanks
George, n4ym
K2 # 4758
K3 # 340
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