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Author Topic: 7650 kHz LSB + 7655.5 kHz USB Fishermen (Severe QRM) 2230 UTC 12 Feb 2026  (Read 36 times)

R4002

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7650 kHz LSB + 7655.5 kHz USB Fishermen (Severe QRM) 2230 UTC 12 Feb 2026
« on: February 12, 2026, 2230 UTC »
Receiver: Wessex UK SDR receiver - South West UK.

Severe QRM from Russian military HF datalink network (FSK on 7657 kHz, 7656.5 kHz USB if tuned in USB mode).  200Hz FSK shift, extremely strong with multiple "mirror" sidebands (likely spurs)

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U.S. East Coast, various HF/VHF/UHF radios/transceivers/scanners/receivers - land mobile system operator - focus on VHF/UHF and 11m
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