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Message-ID: <000001c6a1f1$826fe7c0$16c428c3@captbrian>
From: "captbrian" <captbrian@ukonline.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <20060706221438.67409.qmail@web86503.mail.ird.yahoo.com> <006001c6a174$cfe29890$6501a8c0@eagles>
Date: Fri, 7 Jul 2006 09:38:58 +0100
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Subject: LF: Re: Antenna Tuning
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Wild guess .Coax vertical conductor has parted under its own weight.??

substitute a temporary random  wire  instead of the whole antenna  and thus
prove your test and monitoring system is working.

Bryan


----- Original Message -----
From: "J. Allen" <vy1ja@northwestel.net>
To: <rsgb_lf_group@blacksheep.org>
Sent: 07 July 2006 04:24
Subject: LF: Antenna Tuning


> The tower is grounded at its base at this time, but is up on insulators
and
> can be ungrounded easily by disconnecting a 1/0 grounding conductor.
>
> The vertical portion of the antenna is a piece of coaxial cable spaced
about
> 4 feet away from the tower.
>
> Still no luck finding the first resonant point. All points have been
checked
> from 20 kHz through 250 kHz.  It acts like I have a big capacitor
connected
> to the end of the coax.  At the base of the antenna, I have installed a
> relay and can switch between the dummy load and the antenna base loading
> network.  Whatever is wrong is wrong on the antenna side of that relay.
If
> the dummy load is put on the other connector it acts as a dummy should, so
> the problem is not in the relay or its connection.  If I substitute a
lumped
> constant for the antenna, the traces are as expected with the scope.
>
> I just do not seem to be able to find a resonant point using a frequency
> divider and tiny amp.  The scope traces are either sine wave traces but
with
> the voltage and current out of phase, or else really convoluted forms
which
> are in phase.
>
> I am still at step one.   How to I get the two waveforms to coincide and
at
> the same time have them look like sinewaves?
>
> Any ideas where to go with this now?
>
> "J"
>
>
>
>
>
>
> --
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