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Re: LF: VLF NA Ebnaut

To: [email protected]
Subject: Re: LF: VLF NA Ebnaut
From: Paul Nicholson <[email protected]>
Date: Fri, 22 Dec 2017 09:43:00 +0000
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VO1NA wrote:

> 2100 utc tonight [21st],  16K21A, CRC-8, one character,
> 544 symbols, 1 minute  each, 8270.0075 Hz.

Todmorden (3575 km)
-------------------

Decoded easily.  Eb/N0 +11.1 dB, S/N -26.52 dB in 1Hz,
-60.50 dB in 2.5kHz, rank 0, BER 32%, constant reference phase.

Good quality signal, stable and strong - over 10dB to spare at
the decoder.

Bielefeld (4301.5 km DL4YHF)
----------------------------

Decoded easily.  Eb/N0 +4.7 dB, S/N  -32.91 dB in 1Hz,
-66.89 dB in 2.5kHz, rank 0, BER 41%, constant reference phase.

First Canada to Germany VLF decode, I think.

Perhaps Stefan also decodes?  Distance is slightly greater
at 4419.8 km.

Wolf's receiver has been working very well the last few days.
Wonder if some improvement has been made?

Warsaw (5096.6 km SQ5BPF)
-------------------------

Decoded easily.  Eb/N0 +1.0 dB, S/N -36.58 dB in 1Hz,
-70.56 dB in 2.5kHz, rank 5, BER 44%, constant reference phase.

First Canada to Poland VLF decode.

Cumiana
-------

Unfortunately off line, timing problems, system being re-installed.

--

What a great result!

Will send the decode off-list to confirm, but it is most unlikely to
be false given the strong signal and the same decode at three
sites.

--
Paul Nicholson
--

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