What is a VHF-DSC radio and how is it different than my present VHF?
DSC means Digital Selective Calling. VHF-DSC radios function as a normal VHF radio, but are also capable of sending and receiving digital messages on VHF channel 70. Selective calls can be made to one vessel or groups of vessels, and, by lifting the cover and then pressing the red distress button for at least 3 seconds, a digital distress call will be sent to the Coast Guard and vessels in the vicinity that are also equipped with VHF-DSC. If you connect a GPS to your VHF-DSC, this digital distress call will contain an up-to-date position. Certain models of VHF-DSC can also respond to position polls from other VHF-DSC radios. More information on VHF-DSC can be found in Ship Safety Bulletin 2002/04.
