Howdy, I'm looking for some ideas. I have a 10 year old HF2V, roof mounted,
with 6 elevated
radials, 2 on 80 and 4 on 40, No capacity hat loading, and since it is above
ground, I am not
using the coil between radiator and radials... Every year I adjust the 80M
coil so I can peak
the antenna for either CW or SSB. This year, however, I have a problem.
I adjust the antenna on 80M by either stretching or compressing the base coil.
Compress it
and work CW with resonance at approx 3.525 mHz (SWR ~1.3 to 1), stretch it a
bit to reduce
L and slide resonance up to about 3.775 mHz ---- however the SWR dips only to
about 2.2 to 1
at that point. I've tried reducing the coil by two turns, etc., and the SWR
never gets lower
than 2.2 to 1 UNLESS I compress it again (adding more L). Then the SWR drops
lower
(depending upon the resonant frequency -- at 3.6 mHz, for example, it is about
1.8 to 1, but if I
go down to 3.5 mHz it drops to almost 1.2 to 1.
Anyone have any ideas whhat is going on? And what I might be able to do to get
SSB-
segment SWR back down to better levels?
Any help is appreciated. Please and thanks, and best 73 de alan
--
Alan Kaul W6RCL LaCanada, CA 91011
e-mail: w6rcl@amsat.org
http://home.att.net/~alan.kaul/index.html
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