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Old November 4th 07, 03:44 PM posted to rec.radio.amateur.policy,rec.radio.amateur.antenna
John Doe John Doe is offline
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First recorded activity by RadioBanter: Nov 2006
Posts: 173
Default ANTENNA QUESTION

Thanks Stefan - I will keep that in mind.


"Stefan Wolfe" wrote in message
...

"John Doe" wrote in message
...
If you can't contribute anything positive to this question, then stay out
of it, with your trash!

I have a 10m base loaded mag mount antenna, that I had to put a piece of
felt over the magnet as not to scratch a new vehicle.

When I did this I apparently changed the capacitance between the mag
mount and the roof of the vehicle. Someone suggested that I might want
to replace the felt with either a large balloon or a large prophylactic
as it is thinner and the capacitance would then return to almost where it
should be.

Positive comments only!


The thickness of the balloon will result in a much larger capacitance to
the 'ground' plane counterpoise so it should be a big improvement over the
felt.