The PMB-688 GPS module provides the highest performance with a SiRFstarIII chipset and integrated patch antenna plus an MMCX connector for our external GPS antenna, sold separately. See our GPS Comparison Chart to evaluate this model side-by-side with the very similar PMB-648 and the low cost PMB-248.

The PMB-688 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 as well as a connection for an external one; rechargeable battery for memory and RTC backup; cable for power, and TTL connection.

Features:

• High sensitivity
• SiRFstarIII chipset
• 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

Key Specifications:

• Power requirements: 3.3V - 5V DC @ 65mA
• Communications: TTL asynchronous serial @ 4800 bps
• Dimensions: 1.55 x 1.30 x .35 in (39 x 33 x 9 mm)
• Operating temp range: -4 to +158 °F (-20 to +70 °C)

Downloads & Resources:
Product Specification (.pdf)
NMEA Commands Reference Manual (.pdf)
GPS Comparison Page