December 2nd 05, 01:01 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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