"Wayne.B" wrote in message
...
On Sat, 25 Feb 2006 02:23:31 GMT, "ted" wrote:

I'm not sure why they dont implement DSC on all VHF marine channels.
Maybe
they will in the future after it is proven on channel 70.

You miss the point. Channel 70 is the calling channel for DSC, not
the working channel, just as channel 16 is the calling channel for
voice.


Perhaps I did miss something here. Are you saying that there is never any
voice on channel 70, but only a digital data exchange and then both ships
radio's change freqency to a working channel? Who decides which working
channel to switch to? Does the radio check to make sure the channel is not
in use first? I assume that the voice communication on the working channel
is analog and can be heard by traditional radio equipment?