|Frequencies||370 MHz,400 MHz|
|Frequency Range||370 MHz - 400 MHz|
|Bandwidth||12.5 kHz,10 kHz|
|Short Description||Tetrapol is a digital professional mobile radio standard for digital voice and data communication used by public safety and military throughout Europe. Tetrapol was originally developed by Matra Communication (Currently part of EADS/Airbus Group) in France in the 1980's.|
|I/Q Raw Recording||Download file|
Tetrapol is a digital professional mobile radio standard for digital voice and data communication used by public safety and military throughout Europe. Tetrapol was originally developed by Matra Communication (Currently part of EADS/Airbus Group) in France in the 1980s. At the time, the system was known as "Matracom 9600".
The first Tetrapol customers were the Gendarmerie (mid-1992) and the police (early 1995) in France. Today, Tetrapol technology is supported and is being further developed by two organisations: the Tetrapol Forum (predominantly manufacturers) and the Tetrapol User's Club (user organisations). Tetrapol is not to be confused with the similar sounding TETRA system.
Tetrapol uses a documented data format with undocumented voice codec and optional undocumented encryption algorithms. Tetrapol is FDMAFrequency Division Multiple Access with a channel width of 10 kHzKiloHertz (kHz) 10^3 Hz or 12.5 kHzKiloHertz (kHz) 10^3 Hz.
Tetrapol runs at 8000 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. with an ACFAutoCorrelation Function of 20.069 msmilliseconds (.001 of a second). The raw data rate is 8000 bpsBits per second (bps).
|Idling with Traffic|| Trunking Control|
Digital Voice Traffic:
370-400 MHzMegaHertz (MHz) 10^6 Hz. Usually more channels in a group together.
- Hobby Level Software
- Professional Software
- Tetrapol Forum
- Tetra Watch: Tetrapol and TETRA: a briefing
- shoc Database: Tetrapol
- Tetrapol factsheet
- RadioScanner.RU Tetrapol
- Wikipedia Tetrapol
- Switzerland Federal Office of Communications: Tetrapol Factsheet
- RadioScanner.RU GMSK Analysis