The new ITU recommendation on a digital selective calling system for use in the Maritime Mobile Service calls for the benefit of full GMDSS semi-duplex 25-watt VHF radio telephones with Class-A DSC facilities and CH70 watch receivers.
The new ITU recommendation on a digital selective calling system for use in the Maritime Mobile Service calls for the benefit of full GMDSS semi-duplex 25-watt VHF radio telephones with Class-A DSC facilities and CH70 watch receivers.