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To: [email protected]
Subject: Re: LF: R7NT WSPR15
From: DK7FC <[email protected]>
Date: Sun, 13 Sep 2015 18:04:02 +0200
In-reply-to: <[email protected]>
References: <[email protected]om>, <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv: Gecko/20100227 Thunderbird/3.0.3
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]:

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 ;~) .

----- 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.

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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