There's
also a peak and a trace on 8269.995 Hz in the bottom window of my VLF
grabber (~ 10 dB SNR in 63 uHz). Uwe, I'm glad to see your signal
again! Unfortunately my receiver seems to be many dB worse that
Stefan's...
Best 73,
Markus (DF6NM)
-----Ursprüngliche Mitteilung-----
Von: DK7FC
<[email protected]>
An: rsgb_lf_group
<[email protected]>
Verschickt: Do, 2. Feb 2017 11:19
Betreff: VLF: Uwe on the air!
Hi Uwe, VLF,
Your signal is very strong today, currently 15 dB SNR in 424 uHz!
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
I bet you are trying to run more antenna current to leave a trace at
RN3AUS in the next session!? :-)
It would be interesting to see another EbNaut message from you. Maybe
Markus can decode it as well. Or you can try to use a message longer
than 5 characters, which is the longest message between us so far.
Use Paul's calculator. With the information 15 dB in 424 uHz you can
fill the upper two fields on the page and then vary the message length
and symbol length. For example:
http://abelian.org/ebnaut/calc.php?sndb=15&snbws=0.000424&snmps=&code=8K19&sp=30&crc=16&nc=12&submit=Calculate
Theoretically this should give a decode even if the SNR falls by 6 dB.
With 12 characters you could send your callsign and the locator!
Meanwhile i'm transmitting since 35 hours a stable carrier on
2970.000000 Hz :-)
73, Stefan
