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HF Mystery Signals / 5 kHz bursts, 9 times per 10s, all over HF, deviating ±5 kHz around center freq
« on: August 19, 2022, 1344 UTC »1. Frequency (kHz)
No specific frequency. I've noticed those signals poping up, here and there, in about every HF band, dispersed both on amateur and broadcast bands.
2. Time (UTC)
Any time of the day.
3. Duration
The broadcasts last for very long, several minutes to several hours.
4. Receiver Mode
AM and/or SB
5. Receiver Location
South of Montreal, Canada
6. Description.
The signal consists of 5 kHz wide bursts of what seems to me white noise. They are centered on a frequency (for instance, 11866 kHz) and deviate ± 5Khz, making this mode 10 kHz wide.
Audio sample : https://whyp.it/tracks/37510/audio-sample?token=1ZP4t