!!!!!!!!!!!!!!
Congrats to Dex and Renato and Paul for data extraction :-)
it's simply unbelivable!
73, Marco IK1HSS
----Messaggio originale----
Da: [email protected]
Data: 27-dic-2017 8.21
A: "[email protected]"<[email protected]>
Cc: "Renato Romero"<[email protected]>
Ogg: VLF: New world record distance by W4DEX and IK1QFK
W4DEX wrote:
> 3 chars 16K21A CRC20
> 30 second symbols
> Start 22:30 UT
Success!
Decoded 'QRZ' at Cumiana (IK1QFK) with
Eb/N0 = +0.4 dB, BER 41.6%;
S/N -31.7 dB in 1Hz, -65.7 dB in 2.5kHz
(after sferic blanking);
List rank 5689, constant reference phase;
Distance is 7173.4 km which is a new world record for
VLF message decode and a record distance for EbNaut
at all bands.
Predicted Eb/N0 was +0.6 dB.
Decoded via the live VLF stream from Renato's E-field
receiver.
These two stations already hold the record distance for
carrier detection at VLF. This result extends that to
a message decode.
Signal data available in vlfrx-tools format:
http://78.46.38.217/w4dex-171226-vlf15.vt
Decode with
vtraw -oa w4dex-171226-vlf15.vt |
ebnaut -dp16K21A -r1 -S30 -k20 -N3 -v -PU -L500000
Congratulations to both stations for a great result.
--
Paul Nicholson
--
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