Mobile marine radio service (shortwave)
Mobile marine radio service (shortwave) | |
---|---|
Frequency range | 4000-27500 kHz |
Range | worldwide |
Emergency / calling frequency | 4125 kHz 6215 kHz 8291 kHz 12290 kHz 16420 kHz |
Emergency / Call Frequency (Telex) | 4177.5 kHz 6268.0 kHz 8376.0 kHz 12520.0 kHz 16895 kHz |
DSC alarm frequency (Emergency / Urgency / Security) | 4207.5 kHz 6312.0 kHz 8414.5 kHz 12577.0 kHz 16804.5 kHz |
Necessary radio operating certificate | |
Commercial shipping | General Operator's Certificate |
Recreational boating | Long Range Certificate |
The mobile marine radio service on shortwave is part of the mobile marine radio service that is intended exclusively for radio communications over shortwave .
Range
Intercontinental ranges can be achieved in the mobile marine radio service on shortwave. On the other hand , so-called dead zones , in which reception is not possible, occur, especially in relative proximity to the transmitter, adjacent to the range of the bump .
Usage today
With the advent of the mobile marine radio service via satellites , the importance of the marine radio service on shortwave has declined sharply. Despite various radio services via satellites, above the 70th parallel north and 70th parallel south, only shortwave is permitted as a marine radio service to this day.
Individual evidence
- ↑ General allocation of frequencies for mobile radio applications for maritime and inland waterway radio. (PDF) Federal Network Agency , March 15, 2017, accessed on January 25, 2020 .