TT2300

TT2300

Frequencies	5.0287 MHz,5.1097 MHz,7.7167 MHz,7.7197 MHz
Frequency Range	5.0287 MHz - 7.7197 MHz
Mode	USB
Modulation	MFSK
ACF	—
Emission Designator	—
Bandwidth	1.6 kHz,1.7 kHz
Location	Worldwide
Short Description	TT2300, also known as TT2300B, TT2300-ARQ, TRA-2300, and TPLEX, is an 8MFSK synchronous system developed by Thrane & Thrane of Denmark (acquired by UK defense firm Cobham in 2012).
I/Q Raw Recording	—
Audio Sample

TT2300, also known as TT2300B, TT2300-ARQAutomatic Repeat reQuestAutomatic Repeat Query, TRA-2300, and TPLEX, is an 8MFSK synchronous system developed by Thrane & Thrane of Denmark (acquired by UK defense firm Cobham in 2012). TT2300 was used by French diplomatic services, UK Civil Aviation Authority (National Air Traffic System/NATS datalink, Prestwick/Reykjavik), and Algerian oil companies. Thrane & Thrane's name for this protocol/coding is TPLEX, not to be confused with TWINPLEX.

Characteristics

TT2300 runs at 100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. (300 bpsBits per second (bps)) or 200 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. (600 bpsBits per second (bps)) and uses 8-bit ASCII encoding. Each of the 8 tones uses 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). spacing for ~1600-1700 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). bandwidth.

TT2300 looks and sounds very similar to 2G ALE at 100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. To distinguish, TT2300 has an ACFAutoCorrelation Function of ~320 msmilliseconds (.001 of a second) for both 100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. and 200 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second..

Samples

100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.	200 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

Frequencies

Reported to have been on 5028.7 kHzKiloHertz (kHz) 10^3 Hz, 5109.7 kHzKiloHertz (kHz) 10^3 Hz, 7716.7 kHzKiloHertz (kHz) 10^3 Hz, and 7719.7 kHzKiloHertz (kHz) 10^3 Hz.

Additional Links

• RadioReference.com TT2300B
• HFAsia TT2300
• Hoka Database: TT2300
• RadioScanner.RU Thrane & Thrane TT-2300