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Author Topic: 33.620 MHz USB Russian Military T-219 "Yachta" Scrambler 1217 UTC 29 Jan 2024  (Read 242 times)

Offline R4002

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Via G8JNJ KiwiSDR.  Noted a decent amount of military comms and data signals in the 30-38 MHz region at 1200 UTC tune-in.  33.550 MHz FM, 33.600 MHz FM, 33.650 MHz FM all active with Russian military comms, IDF and other military comms.  Lots of datalink signals on 35 MHz, 36 MHz and 37 MHz...as well as 33.620 MHz USB (center frequency with this analog scrambler, which uses FSK tones in-band is actually 33.621 MHz or can be tuned in USB mode, 2.7 kHz bandwidth. 

Sounds just like a regular voice inversion scrambling voice signal (or a USB signal tuned in LSB, you get the idea) plus two FSK signals on frequency. 
U.S. East Coast, various HF/VHF/UHF radios/transceivers/scanners/receivers - land mobile system operator - focus on VHF/UHF and 11m