[TowerTalk] HF2V (self-standing but not exactly a "tower")

[Paul Playford]

I suspect your problem is with the 80m radials.

The elevated radials are resonant so they should be trimmed for resonance
first by feeding two radials at the center as if they were a dipole and then
feed the antenna normally and adjust the vertical part to resonance.

de Paul, W8AEF

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ZF2TA  FO8DX  FO0PLA  8Q7AA  XZ0A
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----- Original Message ----- 
From: <alan.kaul at att.net>
To: <towertalk at contesting.com>
Sent: Tuesday, September 16, 2003 1:08 AM
Subject: [TowerTalk] HF2V (self-standing but not exactly a "tower")


> 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 at amsat.org
> http://home.att.net/~alan.kaul/index.html
>
>
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>
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>
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