What is the purpose of the MF/HF DSC controller ?

Correct Answer: Option D — Both a) and b) are crucial functions of the DSC Controller.

The MF/HF DSC controller is a dual-purpose device. It manages the formatting and automated transmission of DSC alerts and calls, while simultaneously providing the interface to control the transceiver's frequency and mode settings. This integration is essential for maintaining the mandatory GMDSS watch on designated DSC frequencies.