"Justín Käse" wrote in message
news:41ff890e.3015801@chupacabra...
Has anyone converted one of the old center loaded magnet mount CB
antennas from Radio Shack to 6 meters? This is one of the ones with a
large (soda can size) loading coil and a fairly large (approx 7") magnet
plate. Currently I have it on the roof of this apartment using an old
computer case for stability and a strip of plumbers tape for a
counterpoise. I had to trim about an inch and a half to get it resonant
at 28.4 Mhz, and am thinking of taking it down a few more inches to use
on 6 meters. Would I need to also adjust the length of the counterpoise
strip accordingly, or would the radiator only use as much as needed for
resonance, and disregard the rest, like as if it were mounted on a large
roof vehicle?
--


If you can get inside the coil housing and short-out some of the windings,
you may have a better radiator.