Unknown 12p164 HF data mode

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Unknown 12p164 HF data mode
Unknown data mode sample A.png
Frequencies 12.164 MHz
Frequency Range 12.164 MHz - 12.164 MHz
Mode USB
Bandwidth 3.1 kHz
Location Worldwide
Short Description Unknown HF data burst mode.
I/Q Raw Recording Download file
Audio Sample

This burst data mode was spotted in June 2023. Bandwidth is 3000 ... 3100 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). and there seems to be a pilot tone on the higher edge. Source and purpose of this signal are unknown.


Sample 1 Sample 2 Two bursts in succession
Unknown data mode sample B.png
Unknown data mode sample E.png
Unknown data mode sample G double.png


12164 kHzKiloHertz (kHz) 10^3 Hz

Other frequencies are likely used but not known.

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