> That !W! is supposed to have 2 more characters in there that are either
> the raw additional digits (as implied by the T2-135 manual, "an extra
> digit of precision") or a base-91-encoded pair of digits for each of the
> lat and lon (per http://www.aprs.org/aprs12/datum.txt 
> <http://www.aprs.org/aprs12/datum.txt>).

Ah... the problem is that in Garmin mode it's not extracting the extra 
decimal places.  It's converting from radians (IEEE double-precision 
floating point) to semicircles (32-bit integer) and decoding that to 
decimal minutes.  The same function is used to handle received Base91 
compressed positions, so it's not going to be a quick fix.

Scott

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