RUSSIAN MFSK-16

16-TONE 40 Bd HYBRID MFSK SYSTEM

(Russian intelligence / probably an experimental mode)

FFT-SPECTRA

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• FFT-Spectrum versus time, frequency and signal intensity (start of message preamble)

 
 

• FFT-Spectrum versus time, frequency and signal intensity (station sending MFSK traffic)

 
 

• FFT-Spectrum versus time, frequency and signal intensity (end of traffic sequence)

• FFT-Spectrum versus frequency and signal intensity

 

• Tone distribution over a period of appx. 3 seconds

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