Category:CIS-12: Difference between revisions
Created page with "'''CIS-12''' (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 4800 bps. Each subcarrier transmits at 120 Bd. There is 200 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 in..." |
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[[File:CIS-12.png|200px|thumb|right|Idle/Stand-by -> Traffic burst]] | |||
'''CIS-12''' (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 4800 bps. Each subcarrier transmits at 120 Bd. There is 200 Hz of spacing between each subcarrier. | '''CIS-12''' (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 4800 bps. Each subcarrier transmits at 120 Bd. There is 200 Hz of spacing between each subcarrier. | ||
Revision as of 17:17, 23 September 2026
CIS-12 (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 4800 bps. Each subcarrier transmits at 120 Bd. There is 200 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 Hz.
Multiple stations use this format