GPS_Support_2014
Member
...Actually just came across some other info, I think serial port 3 above (pins 5, 6, 8) on Port B is input only for corrections into the receiver. Think that serial port 2 (pins 2, 3, 5) is the one you would need to output NMEA from Port B. Without a receiver here to fiddle with/check you would need to confirm that with a Trimble dealer.
Either port can be used for NMEA output.