VLF, My new VLF coil is now in operation. It is designed to run 300 mA. The first station where i like to transmit some messages is 8270 Hz, just because 36 km it is the easiest band on the VLF frequ
I would certainly like to try to receive you again on VLF, Stefan. But I understand that EbNaut cannot be seen on a spectrogram. Is that correct? I don't have GPS timing (though I expect to have it b
Hi Mike, Am 22.09.2017 11:52, schrieb Mike Dennison: I would certainly like to try to receive you again on VLF, Stefan. But I understand that EbNaut cannot be seen on a spectrogram. Is that correct?
...Yesterday the transmission went well. Now the transmission/message is repeated daily until the 100 hours are completed or until there are some stations telling the message :-) 73, Stefan Am 21.09.
VLF, 4 transmissions were done successfully. Is there someone trying to decode it at all or is it just a lonely test? 12 characters 16K21A is a bit challenging for most computers though. 73, Stefan A
4 transmissions were done successfully. Is there someone trying to decode it at all or is it just a lonely test? of course people are trying to decode it :) (message sent by email for validation, bu
Hello Jacek, Many thanks. I confirm the message is coorrect :-) 920 km distance on a land path. Not so bad :-) Usually my signal is 7.4 dB stronger. So it would have worked in a single day when using
Just got back from a week's camping in Wales on Shell Island. Chatted with a radio ham who was camped nearby, saw his antenna poking up above the sand dunes. My rx runs happily while I'm away - my ho
I've updated the notes on operations, it now has a table at the end showing the performance across a range of codes and message lengths, http://abelian.org/ebnaut/ops.shtml Some of the entries are n
Hi Paul, I already expected that you were in holidays. Am 26.09.2017 13:56, schrieb Paul Nicholson: So now there are all these messages to decode... Ah yes I am needed - but only to read the emails a
Ok here's the 5th day added: 2017-09-22: +0.4 dB phase 126.0 list rank 8225; 2017-09-23: +1.6 dB phase 131.0 list rank 0; 2017-09-24: +0.3 dB phase 134.0 list rank 242; 2017-09-25: +2.2 dB phase 127.
Hi Paul, Thanks for the 5th day. Am 27.09.2017 14:15, schrieb Paul Nicholson: Ok, but the lower bands will need many days because E-field is not useable. It will take some days until we completed the
Stefan, could you also send carriers during your experiments? i understand that changing bands requires a trip to the roof, so maybe you could send a 1 day carrier after changing the band. you could
Hi Jacek, Yes, sure. Like i did 2 weeks ago on 8270 Hz with the larger coil. I could also do something at night, experimental 1 character messages and so on. Maybe we are already in a range (920 km)
before QSY, could you perhaps also leave the 8270.005 Hz carrier on air overnight? This would give Bernd DF9RB a chance to test his RX in a 31 uHz spectrogram. and i'm sure others will benefit too,
Hi Markus, Jacek, VLF, OK, the carrier is running since 19:35 UTC on 8270.005 Hz and will run until 6 UTC, when the next (3rd) sequence of the 100 character message begins. Good to know there is some
I used Alpha signals to get a rough calibration of the E-field rx and I retrospectively apply this to the recent recordings. Below are the daily results already reported for the 16K21A 12 char messag
Hi Paul, Great work! Very interesting. I like to have these techniques too. I'm on the way! Now the 100 char message is almost through, the 4th time. No results so far? I like the idea of stacking me
Decoded "NIEMAND IST MEHR SKLAVE, ALS DER SICH FUER FREI HAELT, OHNE ES ZU SEIN. _ JOHANN WOLFGANG VON GOETHE" List rank 0, Eb/N0 = +0.7 dB with four days stacked. I used a 'known phase' decode, usin