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Amazon.com: SparkFun GPS-RTK Dead Reckoning pHAT Compatible with Raspberry Pi-Concurrent Reception of GPS GLONASS Galileo BeiDou High Precision GPS - Receives L1C/A & L2C Bands Voltage:5V or 3.3V Logic:3.3V : Electronics
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SparkFun GPS-RTK2 Board - ZED-F9P (Qwiic) High-Precision Breakout No Solderin... 845156009152 | eBay
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Amazon.com: SparkFun GPS-RTK2 Board - ZED-F9P (Qwiic) High-Precision Breakout No Soldering Required Breadboardable Contains a Rechargeable Backup Battery Allowing a Warm-Start decreasing time-to-First-fix : Electronics
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