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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+82\s+Hz\s+signal\s*$/: 6 ]

Total 6 documents matching your query.

1. LF: 82 Hz signal (score: 1)
Author: edgar <>
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 <>
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 <>
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 <>
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 <>
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 <>
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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