For all I know, this may be common knowledge, but it case it isn't I thought I'd pass this along. This is for U.S. sailors/boaters.
I recently purchase
a boat with various radio equipment
(VHF, HF, AIS) that had the previous owner's MMSI programmed. It was going to be a pain to have the equipment
reprogrammed especially since the boat is currently not of the U.S. I was looking at having to ship the AIS
to a certified dealer, pay for an hour of bench time, get it back in country, etc.
What I ended up doing was asking the previous owner to cancel his station license
. I then immediately applied for a new station license
indicating on the FCC form 605b the previous owner's MMSI and viola! New station license in my name with the previous owner's MMSI. No reprogramming necessary!