In article ,
"Chuck Tribolet" wrote:

And Larry seems to think that radio has to be tuned to 70 to receive DSC
calls.
It doesn't. It scans 70, as nearly as I can tell, no matter what you do. It
least my
SH Spectrum does, as does a buddy's more recent SH, and another buddy's
Icom.


I think that you should qualify your above statement, a bit. You should
state that, "Your radio receiver scans VHF Marine Ch 70 while it is not
transmitting, and you think your buddies radios do as well". There are
a lot of DSC Equiped radios that may or may not, scan VHF Marine Ch 70,
or may or may not have a dedicated Ch 70 Receiver builtin. Just how
each model radio's Scan Routine is implimented by the OEM is propritary,
and problematic, to how it responds to a DSC Signal. There are some
radios that don't receive on CH 70, while the receiver is receiving a
signal on the programed channel, and some that don't recieve on Ch 70
while the radio is on Ch 16.
DSC in the Western Hemisphere is still mostly under implimented, and
untill the USCG, and other Governmental Entities, catch up with their
European Counterparts, the OEM's aren't really going to get the Consumer
Type Radios up to dealing with DSC with a full implimentation.

Bruce in alaska
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