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Messages - Alain4S

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I had hoped that this forum would be frequented by useful people who know about these signals.

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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


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