CIS-12

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CIS-12
CIS-12.jpg
Frequencies 7.026 MHz,7.61 MHz,8.5 MHz,10.5 MHz,14.6 MHz
Frequency Range 7.026 MHz - 14.6 MHz
Mode USB
Modulation PSK
ACF
Emission Designator
Bandwidth 3.1 kHz
Location Russia
Short Description CIS-12 (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSK Russian military multi-channel modem.
I/Q Raw Recording
Audio Sample

CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSKPhase-Shift Keying Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 4800 bpsBits per second (bps). Each subcarrier transmits at 120 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. There is 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). of spacing between each subcarrier.

This waveform is transmitted by the AT-3004D and the newer AT-3104D military modems in use by the Russian Military. These modems were designed to have many different devices plugged into them to form the modem’s input – most often teleprinters unique to the different military services and civilian agencies that use them, and also, vocoders and speech encipherment systems, but all are transmitted in the same fashion.

A characteristic trait of this signal is the unmodulated pilot tone at 3300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)..


Samples[edit]

Idle Traffic CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 Variant
CIS-12CHN1.jpg
CIS-12TFC.jpg
CIS-12 VAR.jpg

3 Channels Idle
CIS-12 variant 3 channels idle.jpg

Additional Samples:


Decoding Software[edit]

  • While this software can decode this mode, it cannot decrypt it
Professional Equipment/Software

Additional Links[edit]

Additional Images[edit]