Momay4000,
Sorry if my post was mis construde, I know they have EPIRB capability but I thought we were discussing the DSC function on a Marine side band radio. From what I have read the Coast Guard does not yet have the DSC capapabilty on the Great Lakes.
I guess my recommendation would be to own an EPIRB as that technology is already in place.
I will look into the DSC capability and try and report back any findings.