13 August 2016

CIS-14 FSK 96Bd/1000 with T-207 encryption


The characteristics of CIS-14 FSK-2 are the 96 symbols/sec speed and the 14-bit length frame, in this recording the shift is 1000Hz. This signal has been spotted on 8009.8 KHz (cf) on 0624 UTC.

fig. 1
fig. 2
The transmission is encrypted and in this case is used the T-207 on-line ciphering device, as shown in fig. 3

fig. 3
T-207 is quite old and it is used by CIS Mil as well as by Ukrainian Mil or other Ukrainian Governative users such as Diplomatic and/or Intelligence services: allegedly as a Soviet communication legacy.

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