Hmmm. I agree with tigloo that a more accurate GPS would be ideal. In my brief web search last night I l found both a hardware and software method to translate the output of an Earthmate to the NMEA "language." I don't know enough about GPS to understand if this translation is complete, or if there are things missing from it...

software translator
hardware translator

It's my understanding that the Earthmate is more accurate... Does anyone know how much more accurate it is? Are there any better more precise units in the ~$100 price range that we could think about using?

-Tony
MkII #554
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- Tony C
my empeg stuff