ARQ-M2-342
ARQAutomatic Repeat reQuestAutomatic Repeat Query-M Series: ARQ-M2-242 - ARQAutomatic Repeat reQuestAutomatic Repeat Query-M2-342 - ARQ-M4-242 - ARQ-M4-342
 | |
|---|---|
| Frequencies | 3 MHz,30 MHz |
| Frequency Range | 3 MHz - 30 MHz |
| Mode | USB |
| Modulation | FSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 600 Hz |
| Location | Worldwide |
| Short Description | ARQ-M2-342 (Also known as TDM 342, TDM-2, 96-TDM, and ARQ-28) is a two-channel time division multiplexed telex system. This is the CCIR 342 standard version. Used in Aeronautical, Maritime, and Point-to-Point services. |
| I/Q Raw Recording | — |
| Audio Sample | |
ARQAutomatic Repeat reQuestAutomatic Repeat Query-M2-342 (Also known as TDM 342, TDM-2, 96-TDM, and ARQAutomatic Repeat reQuestAutomatic Repeat Query-28) is a two-channel time division multiplexed telex system. This is the CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R) 342 standard version. Used in Aeronautical, Maritime, and Point-to-Point services. This mode was commonly used by the French Military Forces.
ARQAutomatic Repeat reQuestAutomatic Repeat Query-M stands for Automatic Repeat reQuest, Multiplex, and as such, has a time-division based multiplex of two channels using ITA-3 7-bit encoding. FSKFrequency-Shift Keying shift of 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)..
Typically uses 87 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., 96 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., or 200 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. An uncommon baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate of 128.5 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. was seen on circuits between Papeete, Tahiti, and Mururoa.
Decoding Software[edit]
- Professional Equipment/Software
- go2DECODE
- go2MONITOR
- Wavecom W-Code
- Wavecom W-Spectra
- Rohde&Schwarz CA100
Video Examples[edit]
Analysis and decoding ARQ M Signal (TDM Mode)
Additional Links[edit]
- ITU-R F.342.2 Recommendation
- Wikipedia ARQ-M
- RadioRaft ARQ-M2
- scancat Digital modes
- numbersoddities Info
- shoc Database: ARQ-M2-342
- WAVECOM Database: ARQ-M2-342 and ARQ-M2-242
