Digital Selective Calling

Digital Selective Calling or DSC is a standard for sending pre-defined digital messages via the medium frequency (MF), high frequency (HF) and very high frequency (VHF) maritime radio systems. It is a core part of the Global Maritime Distress Safety System (GMDSS).

Read more about Digital Selective Calling:  Workings, Distress, Other Priorities, Technical Details

Famous quotes containing the words selective and/or calling:

    “The selective memory isn’t selective enough.”
    —Blake Morrison (b. 1950)

    “At length, having come up fifty rods off, he uttered one of those prolonged howls, as if calling on the god of loons to aid him, and immediately there came a wind from the east and rippled the surface, and filled the whole air with misty rain, and I was impressed as if it were the prayer of the loon answered, and his god was angry with me; and so I left him disappearing far away on the tumultuous surface.”
    —Henry David Thoreau (1817–1862)