What is the VHF Channel/Freq for DCS?

• A. Ch 70/156.525 MHz
• B. Ch 16/156.800 MHz
• C. Ch 13/156.850 MHz
• D. Ch 72/156.600 MHz

Answer: (A)

Digital Selective Calling uses a dedicated DSC channel on VHF, so it’s planned to be a separate, digital signaling path to initiate distress, safety, or routine calls. The channel set aside for DSC is Channel 70 on 156.525 MHz. This lets a caller transmit a DSC message with an MMSI without tying up voice channels, and the intended recipient replies on their working channel. The other options are voice channels used for conversations or hailing, not for DSC: channel 16 at 156.800 MHz is the international distress/hailing channel; channel 13 at 156.850 MHz is a bridge-to-bridge channel; channel 72 at 156.600 MHz is a regular working channel. So the correct DSC frequency is 156.525 MHz on Channel 70.