CIS MFSK-68
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|---|---|
| Frequencies | 7.659 MHz,18.28 MHz |
| Frequency Range | 7.659 MHz - 18.28 MHz |
| Mode | USB |
| Modulation | MFSK,PSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 10 kHz |
| Location | Russia |
| Short Description | New Russian MFSK Modem that uses 68 MFSK (5 tones at a time) as well as a 9000 Bd 8-PSK insert every second which spans 10 kHz wide. This signal is often found attributed with CIS-3000, where CIS-3000 acts as the ALE for this signal as well as CIS-128. |
| I/Q Raw Recording | Download file |
| Audio Sample | |
New Russian MFSKMultiple Frequency Shift-Keying Modem that uses 68 MFSKMultiple Frequency Shift-Keying (5 tones per symbol) as well as a 9000 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 8-PSK8-Phase Phase-Shift Keying (3 bits per symbol) insert every second which spans 10 kHzKiloHertz (kHz) 10^3 Hz wide. This signal is often found attributed with CISCommonwealth of Independent States (CIS), the former Soviet Republic-3000, where CIS-3000 acts as the ALEAutomatic Link Establishment for this signal as well as CIS-128. It has also been seen precluding a Mazielka (X06) selcall. They may be sent from the same military modem.
The MFSKMultiple Frequency Shift-Keying uses 68 tones at 100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. or 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. The MFSKMultiple Frequency Shift-Keying portion lasts 960 msmilliseconds (.001 of a second), and the PSKPhase-Shift Keying insert lasts 40 msmilliseconds (.001 of a second), so a single frame is exactly 1 second long. The 8-PSK8-Phase Phase-Shift Keying (3 bits per symbol) insert transmits at 9000 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., so roughly 1440 bits are transmitted each time the PSKPhase-Shift Keying insert happens.
Frequencies[edit]
Spotted at:
- 13441 kHzKiloHertz (kHz) 10^3 Hz
- 7659 kHzKiloHertz (kHz) 10^3 Hz
- 18280 kHzKiloHertz (kHz) 10^3 Hz
- 10367 kHzKiloHertz (kHz) 10^3 Hz
Video Examples[edit]
Additional Links[edit]
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