Gary,

Only the frequencies listed at the bottom of the page are DSC-GMDSS
frequencies, and they are not guarded for voice _unless_ a DSC distress is
received first.. So of course they are guarded by DSC equipment and messages
will be replied to with DSC only when reply is requested. Since the U.S does
not officially have a Sea Area A2 yet, 2187.5 and the accompanying 2182
voice are not the best choice for DSC distress calls. That was however the
only one the Bow Mariner chose to make it's DSC distress and subsequent
voice call on.

The frequencies with guard-times and station listings on that page are
guarded for voice, radiotelex etc as individually listed.

http://www.navcen.uscg.gov/marcomms/...uency/call.htm

Jack

"Gary Schafer" wrote in message
...

This is the quote from about the middle of the page you gave the link
for:
"Note that except for the digital selective calling channels listed at
the bottom of this page, the frequency channels described here are
generally not Global Maritime Distress & Safety System (GMDSS)
distress and safety channels. The Coast Guard does NOT monitor GMDSS
radiotelephone or radiotelex channels."