Serdolik is a MFSKMultiple Frequency Shift-Keying signal used by the Russian diplomatic service.
This signal consists of a 34-tone MFSKMultiple Frequency Shift-Keying signal at 40 bdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. This mode is currently mainly used for link establishment, whereas the actual traffic is passed using an OFDMOrthogonal Frequency-Division Multiplexing waveform.
Sample beginning of transmission:
5 Figure Coded Groups:
5 Letter Coded Groups:
|IRSInformation Receiving Station in an ARQ link (The station receiving information from the ISS. Will send RQ's (Repeat Request) to let the ISS know the information was received successfully. (ARQAutomatic Repeat reQuestAutomatic Repeat Query response)||Tonecall||10 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. Manual|
These can decode, but not decrypt.
- Hobby Level Software
- Professional Equipment/Software