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Waveshare Zed-f9p Gps-rtk Hat For Raspberry Pi, Centimeter Level Accuracy, Multi-band Rtk Differential Gps Module - Demo Board - AliExpress
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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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