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1. LF: 82 Hz signal (score: 1): Author: edgar <[email protected]>; Date: Mon, 29 May 2017 10:07:31 +1000; Looks like the 82 Hz signal received here is not the Russian transmitter, as it did not stop at 21:00. Regards, Edgar Moonah, Tasmania.; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00254.html (8,761 bytes)
2. Re: LF: 82 Hz signal (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Mon, 29 May 2017 10:04:09 +0200 (CEST); The 82Hz carrier is gone, yesterday when i looked at it there was a carrier on 88Hz , and today there is a carrier at 90.2Hz. Spectrograms here: https://klubnl.pl/wpr/en/index.php/2017/05/29/zevs-na-; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00256.html (9,220 bytes)
3. Re: LF: 82 Hz signal (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Mon, 29 May 2017 10:42:27 +0200 (CEST); now the signal went from 90Hz to 92Hz at 8:05 UTC, and disappeared at 8:11 UTC. i've added the spectrogam showing the change at the bottom of the page: https://klubnl.pl/wpr/en/index.php/2017/05/29/z; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00257.html (10,354 bytes)
4. Re: LF: 82 Hz signal (score: 1): Author: Paul Nicholson <[email protected]>; Date: Mon, 29 May 2017 09:21:52 +0000; I don't see these 90Hz and 92Hz signals here this morning, 06:00 to 08:30 UT. Nothing in the range 87.5 to 92.5 Hz. Zevs is strong here, this is yesterday http://abelian.org/vlf/tmp/170529a.png -- Pa; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00260.html (9,983 bytes)
5. Re: LF: 82 Hz signal (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Mon, 29 May 2017 11:51:07 +0200 (CEST); I don't see these 90Hz and 92Hz signals here this morning, 06:00 to 08:30 UT. Nothing in the range 87.5 to 92.5 Hz. then most probably it's intermodulation or it could also be a local signal (althou; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00261.html (9,990 bytes)
6. Re: LF: 82 Hz signal (score: 1): Author: Paul Nicholson <[email protected]>; Date: Mon, 29 May 2017 10:19:28 +0000; For these I use vtnspec to produce the spectrum data, awk assembles it into a data file and gnuplot does the rest with its pm3d map mode. I attach two scripts, one prepares the spectra and the other; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00263.html (11,066 bytes)

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