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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: Stefan Schäfer <[email protected]>
Date: Tue, 16 Nov 2010 14:50:11 +0100
Cc: Paul <[email protected]>
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Dear VLF,

I will do some pre-tests today on the earth antenna (testing if GPS can be received in the forest and if the output transformer becomes warm in steady state when running 100 W RF key-down).

Before i will do a (new) short test on 1970 Hz. A loop antenna was built to receive on 1970 Hz. It has still no preamp but is directly fed into the soundcard, anyway... The antenna is now nulling out the strong QRM of the tram line near the institute and i hope for a better S/N.

After that about one hour or so on 8970.00500 Hz.

Starting time is in about 90 minutes.

If someone wants spontaneous to take part, you are invited. The 24 h transmission will then come hopefully in a few days, maybe wednesday/thursday...


73, Stefan/DK7FC

PS: Again note that this is a very weak signal test and cannot be compared with a kite antenna transmission. So do not wonder if the signal doesn't appear at 25 dB S/N in 4.5 mHz ;-)
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