"Pascal Goncalves" wrote in message
om...
Anibody can tell me the diferences betwen V3.1 and V2.0? Or better,
who have the NMEA 183 specs can send me a copy?

The NMEA specs are copyrighted material and can only be obtained, at a cost,
from www.nmea.org.

I read somewhere that
the V 3.1 alows for more than one talker: this is true?

No. Data from more than one talker can only be combined using an NMEA
multiplexer.

Meindert