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excellent post shockwave!


welcome to the forum.

i hope you can find time to join us here more often.


what about isolating the sigma IV from its support pole?


when you were noticing increased RFI because of coax radiation, and you added the RF choke to the feedpoint; did you isolate the antenna from its support structure?

if not, do you think that the CMC's that you "choked" off of the feedline appeared on the metal mast?


LC