I have a 5" diameter 3/8-24 mag mount and was wondering if a mag mount
like that would have enough capacitance to adequately couple to the
metal surface it was on. Also is there a good rule of thumb on how much
capacitance you need to have a good ground on a mag mount at a given
frequency? I don't plan on having an HF antenna on this mag mount while
driving. I also don't plan on using it on anything below about 20 or 30
meters.

As a side note I heard someone say that the mag mount has to be on steel
for the capacitive coupling to work. I find that hard to believe.
Obviously the magnet won't hold to aluminum or copper gut setting the
antenna on any metal surface will provide the capacitive coupling, won't it?




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Chris W
KE5GIX

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