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Re: LF: TXing on VLF again, A fan in series to the antenna?! :-)

To: [email protected]
Subject: Re: LF: TXing on VLF again, A fan in series to the antenna?! :-)
From: Paul Nicholson <[email protected]>
Date: Fri, 15 Apr 2016 08:27:09 +0000
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This time, a good signal at about 0.35 fT

 http://abelian.org/vlf/tmp/160414a.gif

but the noise was high from the same direction so
cannot be avoided by steering the loops away.

I don't know if this is 150uW, from the signal
strength I might guess 50uW max, probably more
like 30uW.

I ran all 6300 seconds of the carrier through EbNaut to
decode an 'all-star' message at two settings:

 Code   Symbols    Chars   Eb/N0
 8K19A   15.0 sec    3     +0.5 dB
 16K25A   7.7 sec    3      0.0 dB

I couldn't get a 4 char message to decode.  If the
noise wasn't so high this signal would do very well.

How about a daytime test?

--
Paul Nicholson
--

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