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" <[email protected]>
To: <[email protected]>
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"
>
>
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.9.9/382 - Release Date: 04/07/06
>
>
|
