GMDSS: Element 7

1. A The requested alternate working channel was 4125.0 kHz Simplex and your DSC controller has automatically set-up your transceiver.
2. B The DSC controller decoded the contents of the DSC call and has automatically set-up your transceiver but the request is illegal.
3. C Both a) and b) are true
4. D The DSC call came in on 4125 kHz and you should respond on the alternate working frequency.

Tip: press A-D to answer