Thanks for the reply.
i have the full protocol description (attached) from rfsolutions but it is very vague about the query commands.i have worked out the change NMEA output.
the string they display appears to require sending data in all the fields to get data back.
not many people seem to use the querys they seem to take the auto output sentences and strip out the required parts.
i was hoping to give the pic an easy life and have every thing in one sentence and only when i ask for it.....
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