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LC29H Module RTK Differential GPS Beidou GNSS Positioning Dual Frequency L1+L5 High-precision Directional Navigation $34 L1 + L5 https://www.aliexpress.com/item/3256806306815869.html
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GNSS Full-Frequency Centimeter-level Low-power High-precision UM982 Module RTK Differential Direction Finding UAV GPS Module $75, L1, L2 https://www.aliexpress.com/item/3256807213082348.html
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GNSS GPS RTK Module small volume GNSS high-precision positioning module supports L1 L5 frequency RTK-T20LP TOPGNSS $100 https://www.aliexpress.us/item/3256804916196957.html?gatewayAdapt=glo2usa
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GNSS Full-Frequency Centimeter-level Low-power High-precision UM982 Module RTK Differential Direction Finding UAV GPS Module $73 https://www.aliexpress.us/item/3256807213082348.html?gatewayAdapt=glo2usa4itemAdapt
Rtk Differential High Precision Centimeter Gps Module Board Gnss Beidou ZED-F9P/F9k Development Board $180 https://www.aliexpress.us/item/3256805687219820.html?gatewayAdapt=glo2usa4itemAdapt