Hello I have now taken two of my easy radio modules and sent $GPRMC,091600.4,A,2720.24329,S,15302.60358,E,000.02,172.0,071212,011.0,E*4 Once a second. There seems to be no loss of data. So the < 180 characters per payload seems to work My next question is, can I lock down the GPS GT-320FW to say 19200 and just $GPRMC ? - Andrew -