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Re: LF: VLF NA Ebnaut

To: [email protected]
Subject: Re: LF: VLF NA Ebnaut
From: DK7FC <[email protected]>
Date: Thu, 28 Dec 2017 11:09:14 +0100
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Am 28.12.2017 10:01, schrieb Paul Nicholson:

Forest, VA (2415.3 km KE4RJQ)
-----------------------------

 21/22 Eb/N0  -0.4 dB, S/N -38.0 dB in 1Hz, phase  +62.5;
 22/23 Eb/N0  -3.8 dB, S/N -41.3 dB in 1Hz, phase  -15.8;
 23/24 Eb/N0 -14.8 dB, S/N -52.4 dB in 1Hz;
 24/25 Eb/N0   0.0 dB, S/N -37.4 dB in 1Hz, phase  -34.9;
 25/26 Eb/N0  -0.8 dB, S/N -47.4 dB in 1Hz;
 26/27 Eb/N0  -1.5 dB, S/N -39.1 dB in 1Hz, phase -121.1;
 27/28 Eb/N0  -0.1 dB, S/N -37.7 dB in 1Hz, phase    5.1 *Decoded*

But something not right about the phase/timing at Forest.  These
 repeats will not stack. May explain the lack of repeatability seen
 at 17470.1 Hz.

Such a shame! Obviously i wasted two weeks of nightly transmissions during the best time of the year to leave a message on a RX site that is not working properly :-(( I'm disappointed. I remember i asked if the phase of the Alphas, JXN and HWU is reproducable or if it shows the same behaviour. It seems that precision VLF stuff is not as easy as it seems in the first view... This is why i run my Alpha F1 (11904.7619 Hz) RDF spectrogram on my grabber...

73, Stefan


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