Primary Users
Principally users that need robust shortwave communications
- All military departments, all over the world (using cryptography)
- Diplomatic services all over the world (using cryptography)
- Weather reports are transmitted by the US Coast Guard nearly continuously
- RTTY systems are also fielded by amateur radio operators, and are popular for long-distance contacts
A regular service transmitting RTTY meteorological information is the German Meteorological Service (Deutscher Wetterdienst or DWD). The DWD regularly transmit two programs on various frequencies on LF and HF in standard RTTY (ITA-2 alphabet). The list of callsigns, frequencies, baudrates and shifts (current June 2012) are as follows:
| Callsign | Frequency | speed/shift |
|---|---|---|
| DDH47 | 147.3 kHz | 50 baud/85 Hz |
| DDK2 | 4583 kHz | 50 baud/450 Hz |
| DDH7 | 7646 kHz | 50 baud/450 Hz |
| DDK9 | 10100.8 kHz | 50 baud/450 Hz |
| DDH9 | 11039 kHz | 50 baud/450 Hz |
| DDH8 | 14467.3 kHz | 50 baud/450 Hz |
The DWD signals can be easily received in Europe, North Africa and parts of North America.
Read more about this topic: Radioteletype
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