I have a homebrew G5RV type antenna. The antenna wire is fed with 300 ohm
radio shack twin lead, which runs to a Van Gorden HI-Q 4:1 balun, which then
feeds RG-11 75ohm coax. I have used this system for 14 years now with good
results. I am wonder if adding a coax choke balun (several turns of coax wound
up in a circle) would help at all. I would like to minimize RF on the shield of
the coax (as well as noise it would pick up) and think the HI-Q balun should do
this, but would the coax choke help as well, or just be redundant?
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