GMDSS: Element 7

1. A The DSC controller decoded the requested voice frequency as 4207.5 kHz simplex and your DSC controller has automatically set-up your transceiver.
2. B The DSC controller decoded the contents of the DSC call but the request is illegal.
3. C Both a) and b) are true
4. D The DSC call came in on 4 MHz DSC. You should set-up your transmitter and respond on the appropriate voice follow-on frequency.

Tip: press A-D to answer