CIS MFSK-20 XPA
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|---|---|
| Frequencies | 3 MHz,30 MHz |
| Frequency Range | 3 MHz - 30 MHz |
| Mode | USB |
| Modulation | MFSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 800 Hz |
| Location | Russia |
| Short Description | Enigma Designation XPA, also known as MFSK-20, CIS MFSK-17, and CIS MFSK-20, is a 17-tone MFSK signal said to have origin from Russian Intelligence and Foreign Ministry stations. |
| I/Q Raw Recording | — |
| Audio Sample | |
Enigma Designation XPA, also known as MFSKMultiple Frequency Shift-Keying-20, CISCommonwealth of Independent States (CIS), the former Soviet Republic MFSKMultiple Frequency Shift-Keying-17, and CISCommonwealth of Independent States (CIS), the former Soviet Republic MFSKMultiple Frequency Shift-Keying-20, is a 17-tone MFSKMultiple Frequency Shift-Keying signal said to have origin from Russian Intelligence and Foreign Ministry stations.
XPA has a very unique preamble sequence, and a lower "sync" tone that other MFSKMultiple Frequency Shift-Keying systems don't have. XPA transmits 5 number groups of unknown meaning. XPA has used 10 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) mode and 20 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. DSBDual Side Band Modulation (AMAmplitude Modulation) mode, but since 2011 XPA has stopped using the 20 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. mode and is only using the 10 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) mode.
Samples[edit]
| 10 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. | 20 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. |
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Frequencies[edit]
Seen at:
- 13.3675 MHzMegaHertz (MHz) 10^6 Hz
Decoding Software[edit]
- Hobby Level Software
- Professional Equipment/Software
Sample Demodulated Message[edit]
33019 05400 25373
block sync
19979 16160 04375 24578 30968 89653 02648
22703 81031 60888 08445 06466 45994 43195
05586 62607 90024 67425 17215 18061 46252
99304 23275 92899 49209 85293 12049 74634
68435 55473 85587 52908 04308 49381 28329
39814 80033 30644 97121 29257 14550 94335
24553 32893 15518 94438 70979 41503
++++++++++++++++++++
Baudrate: 10 Shift: 85 Center: 1410
Video Examples[edit]
- Signal reception XPA 10 Bd with SDR, conversion in Wave format and decoding with RIVET
- decoding the XPA polytone station
- Numbers Station, Russian, XPA, 20 bd, October 08, 2011, 1320 UTC, 10736 kHz, USB Mode
- POLYTONE NUMBER STATION XPA
- XPA 13368 kHz
- XPA 12168 kHz
- XPA 10868 kHz
Additional Links[edit]
- WAVECOM Database: MFSK-20
- Priyom ENIGMA Designation XPA
- Numbers-Stations XPA
- RadioScanner.RU CIS 20-MFSK
