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December 2nd 05, 12:01 AM
posted to rec.radio.shortwave
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Maritime Monitoring: Simplex and Duplex Questions
Robert11 wrote: Hello: Have never gotten into monitoring any Maritime HF voice communications, but thought it might be interesting, so let me ask, please, a few really basic questions. Ship to shore and shore to ship voice and phone comms: are these (usually) via simplex or duplex channels ? If both, who uses what, etc. ? Any good frequencies to try ? Usually USB ? This may help: http://www.naval.com/hf-freq.htm dxAce Michigan USA |
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