From The RadioReference Wiki

These are modes thought to be used by the Russian Main Intelligence Directorate(GRU). See the links below for more information.

Usage Notes

  • Frequent logs of this mode found in 2015


  • Hoka 3-32P
  • Hoka Code 300-32P
  • Rivet

Audio Sample / Waveform

Related Links

FSK 200/500

FSK 200/1000

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