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| To: | [email protected] |
|---|---|
| Subject: | Re: VLF: Long time transmission on earth antenna |
| From: | Daniele Tincani <[email protected]> |
| Date: | Fri, 19 Nov 2010 03:00:44 -0800 (PST) |
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Hello Stefan,
no detection of your signal here (though I did not expect to be able to receive it).
Regards
Daniele
From: Stefan Schäfer <[email protected]> To: [email protected] Cc: Paul <[email protected]>; Bernd Grupe <[email protected]> Sent: Fri, November 19, 2010 10:14:43 AM Subject: 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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