CIS-128
 | |
|---|---|
| Frequencies | 3 MHz,30 MHz |
| Frequency Range | 3 MHz - 30 MHz |
| Mode | USB |
| Modulation | PSK,OFDM,QAM |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 3.1 kHz,6.1 kHz |
| Location | Russia |
| Short Description | CIS-128 is an OFDM mode that uses 128 channels, with one “off” channel in the center, so the signal is divided into two 64 channel parts. |
| I/Q Raw Recording | — |
| Audio Sample | |
CISCommonwealth of Independent States (CIS), the former Soviet Republic-128 is an OFDMOrthogonal Frequency-Division Multiplexing mode that uses 128 channels, with one “off” channel in the center, so the signal is divided into two 64 channel parts. This mode has been seen using QAMQuadrature Amplitude Modulation and PSKPhase-Shift Keying of various modes. QAMQuadrature Amplitude Modulation-16, QAMQuadrature Amplitude Modulation-4, and QPSKQuadrature Phase-Shift Keying (2 bits per symbol) have been seen so far. Has a baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate of about 21 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. in each subchannel. Has been seen with CIS-3000 preluding the transmission.
Also seen in a 6 kHzKiloHertz (kHz) 10^3 Hz wideband mode, with double the baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate but still maintaining 128 channels and the center off channel.
Samples[edit]
QAMQuadrature Amplitude Modulation-16
QPSKQuadrature Phase-Shift Keying (2 bits per symbol)
