CIS-12

CIS-12

Frequencies	30 MHz,300 kHz
Frequency Range	300 kHz - 30 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, AT-3104D, T-230) 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

Idle	Traffic	CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 Variant

3 Channels Idle	Standby

Additional Samples:

Standby mode demodulated as AMAmplitude Modulation. This is sometimes confused with being a radar.

Decoding Software

• While this software can decode this mode, it cannot decrypt it

Professional Equipment/Software

• go2DECODE
• go2MONITOR
• Hoka 300-32
• W-Code hex output only
• Wavecom W-Spectra

Additional Links

• I-56578 CIS-12
• RadioScanner.RU CIS-12
• shoc Database: CIS-12
• hinet MS-5
• WAVECOM Database: CIS-12
• Video of CIS-12 transmitting data and entering standby mode

Additional Images

CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 spotted @ 7.61MHz April 4, 2015 CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 QRMing (interfering) a LINK-11 broadcast @ 8.5MHz, May 8, 2015 CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 seen in Romania at 13.045 MHzMegaHertz (MHz) 10^6 Hz, about 500Hz off tune when recorded CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 with Full Carrier and 3300Hz pilot tone, BPSKBinary Phase-Shift Keying (1 bit per symbol) and experiencing strong multipath fading. Captured from websdr @ Univ. of Twente, at 8440 kHzKiloHertz (kHz) 10^3 Hz. Oct 10 2015 CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 transmitting at 9192.2 kHzKiloHertz (kHz) 10^3 Hz on October 12, 2015. Captured from WebSDR @ Univ. of Twente Idling CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 at 4605 kHzKiloHertz (kHz) 10^3 Hz. Submitted by DisQreet