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-------- Original Message --------
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<th valign="baseline" align="right" nowrap="nowrap">Subject: </th>
<td>LF: Antenna current</td>
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<th valign="baseline" align="right" nowrap="nowrap">Date: </th>
<td>Mon, 24 Mar 2003 22:18:14 -0000</td>
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<th valign="baseline" align="right" nowrap="nowrap">From: </th>
<td>"g3ldo" <a class="moz-txt-link-rfc2396E" href="mailto:g3ldo@ukonline.co.uk"><g3ldo@ukonline.co.uk></a></td>
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<th valign="baseline" align="right" nowrap="nowrap">Reply-To: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:rsgb_lf_group@blacksheep.org">rsgb_lf_group@blacksheep.org</a></td>
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<th valign="baseline" align="right" nowrap="nowrap">To: </th>
<td><a class="moz-txt-link-rfc2396E" href="mailto:rsgb_lf_group@blacksheep.org"><rsgb_lf_group@blacksheep.org></a></td>
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<th valign="baseline" align="right" nowrap="nowrap">References: </th>
<td><a class="moz-txt-link-rfc2396E" href="mailto:3E4BC23500033F62@mk-cpfrontend-4.mail.uk.tiscali.com"><3E4BC23500033F62@mk-cpfrontend-4.mail.uk.tiscali.com></a> <a class="moz-txt-link-rfc2396E" href="mailto:5.1.0.14.0.20030314120358.024cf410@gemini.herts.ac.uk"><5.1.0.14.0.20030314120358.024cf410@gemini.herts.ac.uk></a></td>
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<pre>Jim M0BMU said
> My loading coil lives outside in a shelter made of plastic sheet over a
> timber frame. To get rid of condensation, I have an old fan-heater in the
> bottom of the housing. The 2 heating elements are wired in series so it
> consumes roughly 500W instead of 2kW. This is so it runs much cooler than
> normal, just a warm draught, to avoid melting the plastic.
>
For many months (or is it years) now I had been puzzled over the variations
in antenna current that occurred at different periods of time. I had tried
correlating the changes with tides, weather or if there was a R in the month
but nothing seemed to fit.
I have now tried the Jim loading coil central heating method with much
success. I built a plastic shelter and fixed up a fan heater.
Earlier this evening, with the fan heater off, the weather was dry and
still, but with quite a lot of precipitation just after dark I fired up the
transmitter. Result antenna current 3 amps.
Ran the heater for an hour. Result antenna current 7amps.
The coil seemed quite dry but obviously the dry warm air made a big
difference.
Regards,
Peter, G3LDO
e-mail <g3ldo @ukonline.co.uk="">
Web <http:>
</http:></g3ldo></pre>
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