Yachta T-219 Voice Scrambler
Yachta or Yakhta (Russian for 'Yacht' or 'Boat') T-219 is an analogue voice scrambler. It is unique in that an FSKFrequency-Shift Keying sync signal is transmitted in the middle of the main signal, with the scrambled voice stream split above and below the FSKFrequency-Shift Keying signal. This mode was replaced by CIS-12.
The FSKFrequency-Shift Keying sync signal transmits at 100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. with 150 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). shift. Used by the Russian Military to send time-sensitive information.
Seen at: 28.347 MHzMegaHertz (MHz) 10^6 Hz