Hi Jay,
I think the guard ring above the upper winding of the coil lost its
contact to this winding. So it was floating. Or, the contact was loose
so there was a small arc that started to burn that ring down so the
structure became more and more inhomogenious, from a E-field view. Well,
at least it worked very well since 2011!
I want to get even better results after the maintenance. There is some
room for improvements: The diameter / length ratio has never been
optimal on that coil. I want to check if it's possible to build a double
layer coil, at least a few of the upper windings... Effort but
interesting :-)
73, Stefan
Am 13.09.2015 15:35, schrieb [email protected]:
Stefan
Any idea what started the meltdown?
Heard someone say once: There are two types of LF ops ... those that
have experienced fires ... and those that will ;~) .
Jay W1VD WD2XNS WE2XGR/2
----- Original Message ----- From: "DK7FC" <[email protected]>
To: <[email protected]>
Sent: Sunday, September 13, 2015 9:16 AM
Subject: Re: LF: R7NT WSPR15
Hi LF,
Unfortunately my LF coil got damaged during transmitting a few weeks
ago. I'm soon repairing the coil and hope to join the 2200m band then
again.
https://dl.dropboxusercontent.com/u/19882028/LF/20150910_193005.jpg
https://dl.dropboxusercontent.com/u/19882028/LF/20150910_192916.jpg
https://dl.dropboxusercontent.com/u/19882028/LF/20150902_182551.jpg
73, Stefan
Am 13.09.2015 15:02, schrieb Mike Dennison:
Alex was also a good signal with me when he sent Opera 32 last night.
Mike, G3XDV
==========
Hi Alex,
sorry my WSPR is on strike, no uploads.
Made it now manually.
1745 -35 1.1 0.137603 0 R7NT KN97 53
1800 -32 1.1 0.137603 0 R7NT KN97 53
1815 -35 -0.2 0.137604 0 UT7GH KN66 20
1845 -36 1.5 0.137603 0 R7NT KN97 53
1900 -34 1.5 0.137603 0 R7NT KN97 53
73 Joe
-----
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Checked by AVG - www.avg.com
Version: 2015.0.6125 / Virus Database: 4419/10626 - Release Date:
09/12/15
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