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difference between DSC and AIS?
"Pascal" wrote in news:1145139514.303678.7110
@u72g2000cwu.googlegroups.com: The frequency os AIS can change at every country? No, it's the same. My mistake. In the USA, one of the channels was a duplex pair used by the old marine telephone operators so its either 87a or 88a, I forget which, which designates it as a simplex frequency (one frequency transmit and receive so AIS will work). The whole VHF bandplan across the planet is stupidly laid out and way out of date... |