The 28500 PMB-648 GPS SiRF Internal Antenna by Parallax provides high performance with a SiRFstarIII chipset and integrated patch antenna.
The PMB-648 GPS features 20 parallel satellite-tracking channels for fast acquisition of NMEA0183 v2.2 data for robotics navigation, telemetry, or experimentation. There is a built-in patch antenna; rechargeable battery for memory and RTC backup; cable for power, TTL and RS-232 connections.
20 parallel satellite-tracking channels for fast acquisition and reacquisition
Built-in rechargeable battery for memory and RTC backup
Supports NMEA0183 V2.2 data protocol
Includes cable for power, TTL and RS-232 connections
Power requirements: 3.3V - 5V DC @ 65mA
Communications: TTL or RS-232 asynchronous serial @ 4800 bps
Dimensions: 1.25 x 1.25 x .35 in (32 x 32 x 9 mm)
Operating temp range: -4 to +158 °F (-20 to +70 °C)