Re: VLF: New world record distance by W4DEX and IK1QFK

[Paul Nicholson <vlf0403@abelian.org>]

Dex wrote:

> 3 chars 16K21A CRC20
> 30 second symbols
> Start 22:30 UT

At Bielefeld (6917.7 km): Eb/N0 -3.3 dB;

At Warsaw (7681.3 km): Eb/N0 -6.5 dB;

At Hawley TX (1816.2 km): Eb/N0 +5.7 dB *Decoded*;

The decode at Hawley is a new USA record distance
for VLF message decode.

If Alex can supply a WAV file, I will analyse it to
measure Dex's signal.   Frequency is 8269.9 Hz
and the message ran from 2017-12-26 22:30 to
2017-12-27 06:14 UT.

The intention was to use 16K23A but I had forgotten
that code is not yet in the Windows version.

--
Paul Nicholson
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