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Re: VLF: Long time transmission on earth antenna

To: [email protected]
Subject: Re: VLF: Long time transmission on earth antenna
From: "Jean-Pierre Méré (F1AFJ)" <[email protected]>
Date: Fri, 19 Nov 2010 12:03:39 +0100
In-reply-to: <[email protected]>
References: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6

Hi Stefan ,

Nothing here ! I listening 20:00 to 07:00 today

73 Jean-Pierre f1afj

Le 19/11/2010 11:50, [email protected] a écrit :
Not a trace Stefan,sorry,

73
Victor

-----Oorspronkelijk bericht-----
Van: [email protected]
[mailto:[email protected]]Namens Stefan Schäfer
Verzonden: vrijdag 19 november 2010 10:15
Aan: [email protected]
CC: Paul; Bernd Grupe
Onderwerp: Re: VLF: Long time transmission on earth antenna


Dear VLF,

It seems these batteries are not in best condition. The carrier got
weaker and weaker in the morning and disappeared arround 5 UTC.

The SMPS that drives the PA is designed to generate its own 15 V supply
once it started to run. But if the input voltage falls below 10V (or 9)
it shuts down. Seems that this has happend... The batteries have>  300
Ah in sum so it should have been no problem, actually...

I assume no one except me has detected anything?

BTW: The starting time was 15:30 UTC so the DFCW shift appeared at 23:30 UTC

73, Stefan/DK7FC



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