Hello Paul, This is my overnight plot around 137.455 kHz. Best regards, Roelof == From: Roelof Bakker, PAoRDT Location: Middelburg, Zealand SW Netherlands, 51 30 02 N, 03 36 02 E Locator: JO11tm Rece
Thanks all very much indeed for the reports and decodes. I've downloaded Domenico's wav files for a closer look. It was a good result for EbNaut. The best decode by Domenico corresponds to about -46d
Hi Paul, No problem now, see attachments. 73, Stefan Am 13.03.2016 23:04, schrieb Paul Nicholson: Carrier on from 21:58, EbNaut from 22:00 Frequency: 137465.00000 Hz Coding: 8K19A Chars: 12 Symbols:
Hello Paul and all, sorry Paul but no decodes in JN80 this time. Maybe also due to high QRN from nearby thurnderstorms. I have added two audio files in the usual dropbox folder. ...but please do not
Hi Paul, now two out of three ain't bad: Sun/Mon 2016-03-13/14 start car. sym. UT dB dB 22:00 1.0 3.2 23:00 0.4 3.0 00:00 nil A few recent wav files are at http://df6nm.bplaced.net/VLF/fec_tests/EbNa
Hi Paul & All, Paul wrote :- I was about to fire up the tx but it looks like somebody is on or near 137.465 already. That was probably Mike G3XDV running Opera "Op32" mode (32 minutes Tx). See :- htt
No it was some CW, here's the tail end of it 10 mins or so before I started transmitting at 21:58 http://abelian.org/tmp/137700Hz_160313_2201.jpg I couldn't make any sense from the Morse. -- Paul Nic
Oh, I just looked at your screenshot Gary. So that's what Opera looks like. I thought it was Morse code, no wonder I couldn't read it! It doesn't take up much bandwidth does it? How many Hz away do I
Stefan and Markus, thanks very much for the reports! A nice result from Heidelberg and you did a full phase search in 15 degree steps! I think I've reached all the stations equiped for coherent recep
Paul, Yes, that is an Opera signal. Opera uses on/off keying rather like QRS. The characters are quite different to normal morse code. The decoder does the hard work, it decodes & displays. You don't
Hi Paul, Am 14.03.2016 20:34, schrieb Paul Nicholson: A nice result from Heidelberg and you did a full phase search in 15 degree steps! Yes, it was interesting to see the phase change in smaller step
"... thinking about the costs and merits of kites and balloons." Kite/balloon = helikite, which provides interesting low-cost options for stable one-man deployment and operation, especially if a pick
I tried the long wire at ELF - it was useless. No Schumann and it can't see transients from TLEs. In fact it was pretty poor at VLF which probably shows how well it couples to the trees. So, not a ve
I've a vague recollection that someone on the list said that you don't need an NoV for an earth antenna? Can anyone recall? Yes its Audio and not covered by the electro magnetic regulations 73-G, I t
Paul! You wrote: ... I dug the big toroid out. It has two windings, 400 turns giving 0.98H and 10 turns of 2cm wide copper strip for 395 uH. So about 6.17uH/turns^2. At 8270Hz 2.44V in gives 101.6V o
Or to be more accurate , You don't need a NoV for ground transmission .. that's not quite the same as attempting to generate EM field from a large loop :) I've a vague recollection that someone on th
Hi Paul, Am 17.03.2016 19:06, schrieb Paul Nicholson: Also was inspired by something that Andy posted recently about PAs powered from rectified mains. Somewhere in the shed there's a mains isolating
