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Author Topic: utterly weird sounds on 10140 LSB 2251Z  (Read 1861 times)

Offline atrainradio

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utterly weird sounds on 10140 LSB 2251Z
« on: October 14, 2013, 2253 UTC »
I have absolutley no idea what it is! Its like random tones being played. Then it stops and now some data noises are coming in with the tones underneath. It might be a numbers station. Priyom.com has something about it Ithink. Help me out here this will bug me!
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KD2VEG
QTH, Queens
Tecsun PL-990 w/ outdoor FM omni and 40m dipole, RTL-SDR, Grundig Sat 750

Offline ChrisSmolinski

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Re: utterly weird sounds on 10140 LSB 2251Z
« Reply #1 on: October 14, 2013, 2313 UTC »
That's a ham band - it sounded like one of the zillion MFSK modes to me.
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline refmo

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Re: utterly weird sounds on 10140 LSB 2251Z
« Reply #2 on: October 14, 2013, 2314 UTC »
That is (at least the tones part) JT65A mode, a very minimal data exchange mode.
Actually would be best decoded on 10138USB.  Sounds kinda like an out of tune pipe organ.  Each transmission lasts 46 seconds if I remember correctly.
Google will give more info and free decoder software.
« Last Edit: October 14, 2013, 2317 UTC by refmo »
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Northeast Kentucky
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Offline atrainradio

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Re: utterly weird sounds on 10140 LSB 2251Z
« Reply #3 on: October 14, 2013, 2320 UTC »
Thanks so much! That's what I was starting to think it was too. Its really hard to listen to its disturbing really.
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KD2VEG
QTH, Queens
Tecsun PL-990 w/ outdoor FM omni and 40m dipole, RTL-SDR, Grundig Sat 750
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