We already have it. It's called Ethernet. Even if you have NMEA instruments, 
you can use intelligent gateways that already exist. What problem?
Steve
"Poit"  wrote in message 
  00.119...
I would like to see the community come up with an open standard that would
 kill off NMEA.  It could stay purely ascii, be bi-directional, easy to 
 use,
 no binary mumbo-jumbo.  It could be extensible like XML.  Best of all it
 would be free for everyone including manufacturers.
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