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Author Topic: 7939 @ 0350z - analog? digital? SigIDWiki fails me again!  (Read 1201 times)

Offline alleycat

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I never seem to be able to find a decent match for my mystery signals at SigIDWiki. This one looks like digital modes with a number of discrete frequency points used, but the frequencies "bend" while being transmitted (voice encryption?). Sorry I'm not more versed in the proper terminology. Screen capture of waterfall:

Audio clip: https://www.lutins.org/sdr/7960_USB_3_kHz_bw.mp3

Thanks for any ID assistance!
allen lutins - KC2KLC
Binghamton, NY
Rigs: Yaesu FT-897D, Elecraft KX3, RTL-SDR Blog V3 & SDRPlay RSP1A
Antennas: G5RV Jr dipole, Alpha Antenna EZMilitary portable vertical & Grove Omni-II discone
eQSLs welcome: kc2klc@lutins.net

Offline Token

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Re: 7939 @ 0350z - analog? digital? SigIDWiki fails me again!
« Reply #1 on: April 02, 2022, 1430 UTC »
This sounds very much like one of the jammers I have heard used, but can't remember which off the top of my head.  Maybe Cuban?

T!
T!
Mojave Desert, California USA

Offline alleycat

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Re: 7939 @ 0350z - analog? digital? SigIDWiki fails me again!
« Reply #2 on: April 03, 2022, 0301 UTC »
I think you're correct - I could hear a weak broadcast under one of these signals.
allen lutins - KC2KLC
Binghamton, NY
Rigs: Yaesu FT-897D, Elecraft KX3, RTL-SDR Blog V3 & SDRPlay RSP1A
Antennas: G5RV Jr dipole, Alpha Antenna EZMilitary portable vertical & Grove Omni-II discone
eQSLs welcome: kc2klc@lutins.net

 

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