Well - I finally got my T-top installed and have the VHF with DSC installed. I programmed in my MMSI and the vhf is wired to the GPS - all is working fine.
If anyone is still interested in this issue - I figured out how to get a group mmsi. I wrote to the USCG and they pointed me to this Q&A:
I own a small fleet of boats, each equipped with DSC-equipped VHF radios. I have already programmed each with an individual MMSI number. These radios also allow programming with a vessel group MMSI, which I need for calling all of my vessels. How do I obtain a vessel group MMSI assignment?
Your individual MMSI assigned by the FCC should end in a zero. To obtain a vessel group identity, take any one of your individual MMSI numbers, remove the zero at the end of the number, and add a zero at the beginning. That new number will be your vessel group identity. For example, if your individual identity is 366123450, your vessel group identity is 036612345. If your individual identity does not end in a zero, you will need to obtain a group identity from the FCC or the agency which assigned you your individual identity.
So - it looks like we simply take any one of our MMSI's that end in a zero and switch the numbers - my mmsi 338025379 doesn't end in a zero. Does anybody have one that ends in a zero that they want to use to establish a group mmsi?
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