[TowerTalk] Short Dipole for 40M
Tom Rauch
w8ji at contesting.com
Tue Apr 20 21:39:47 EDT 2004
> In a message dated 4/20/04 8:08:45 PM Eastern Daylight
Time, k3bz at arrl.net
> writes:
> >>If anyone has time to look, there's a design at
> http://www.flashwebhost.com/circuit/shortant.php
> I'd appreciate opinions and comments.<<
It should be easily possible to get at least 50% efficiency
without too much bother even with a poor coil if the antenna
is half-size. If the coil construction is even moderately
good (Q around 200)efficiency would easily be in the 90%
area with a half size wire dipole that is loaded at the
feedpoint.
The key is keeping the antenna as long as possible and in
the clear, and using a reasonably well constructed coil.
It still would be easier to use an inverted V dipole and it
would work better, of room is not an issue.
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