Template:FAQ/Questions/iac the nmea and

What serial port communications protocols does the GPS receiver support?
The u-blox LEA-4H modules supports the NMEA 0183 (industry-standard ASCII text) and UBX (u-blox proprietary binary) protocols. The document that describes the u-blox implementation of the NMEA and UBX protocols is here: ANTARIS Protocol Specification (you may have to do a simple registration to access u-blox technical documentation). The ANTARIS Protocol Specification is the only document that describes the full UBX protocol in detail. The NMEA 0183 Interface Standard protocol is officially defined by the National Marine Electronics Association, and the official Standard document is available only from them, for $270. The gpsd project does publish a list of the NMEA sentences they support here.

LEA-4H serial port 1 is connected to gumstix /dev/ttyS2, initializes at 9600 8N1 and is configured to transmit and receive NMEA and UBX messages: See the FAQ sections below for software that works with GPS data on the gumstix or PC-based software that can work by redirecting the GPS data off the gumstix.
 * UBX: No messages output by default
 * NMEA: GGA, GLL, GSA, GSV, RMC, VTG, ZDA, TXT messages output by default