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The marine radio operates on select number of unique frequencies in the VHF - Very High Frequency range. The frequency of operation will determined by the channel number selected on the radio. See Channel page for a listing of channels and their usages.
The radio uses FM is vertical polarization - the antenna needs to vertical to the horizon to be efficient.
Hand held radios transmit with 1 watt and 5 watt modes.
Base Marine Radios operate with 5 and 25 watt modes.
FM - Frequency modulated - Vertical Polarization the antenna needs to be vertical with the horizon to be efficient
Simplex operation - one talker ever one else listens.