13. How are paired NBDP frequencies normally used? . A: These are normally used for FEC conunurucations with coast radio stations. B: These are normally used for ARQ communications with coast radio stations. C: These are normally used only for distress communications to limit channel interference. D: These are normally used for DSC communications with coast radio stations.
13. How are paired NBDP frequencies normally used? . A: These are normally used for FEC conunurucations with coast radio stations. B: These are normally used for ARQ communications with coast radio stations. C: These are normally used only for distress communications to limit channel interference. D: These are normally used for DSC communications with coast radio stations.
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