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Old July 30th 06, 02:59 PM posted to rec.radio.amateur.antenna
Kryptoknight Kryptoknight is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 4
Default Help with Antenna

so there is no better ducky antenna than the one that came with this cb ??

any suggestions on a roof mounted thin stainless whip??


"Roy Lewallen" wrote in message
...
Richard Clark wrote:

The difference between an infinitesimal antenna and a quarterwave
antenna is only 5%. However, to get the small antenna to resonate
brings far more opportunity for loss. 12-18" long is not likely to
bring you any advantage but carefree dreams unless you can strangle
the loss.


To clarify, that 5% is only for a lossless antenna. When the antenna
becomes very short, you also take a beating in conductor loss, since the
currents get enormous, so the antenna itself becomes inefficient. And of
course if the antenna depends on current through the ground, you take a
beating there for the same reason. So add conductor and possibly ground
loss to the inevitable loss in the matching network which must also deal
with high current and/or high voltage.

Roy Lewallen, W7EL