APM2.6 2.8 GPS Module High Precision GPS With Electronic Compass PIXHAWK
$26.30 (Free or Cheap Shipping) UBLOX M8N High Precision GPS Module w/ Compass for R/C Drone (M8N, White (for PX4 Pixhawk FC)) at m.FastTech.com - FastTech Mobile
NEO-M8N High Precision GPS Module Built-in Compass GPS Folding Antenna Mount Holder - Antennino
Compact Delincomm High Precision GPS Engine Module Super Sensitivity U8 Gnss Module - China GPS Module, Compac Low Power GPS | Made-in-China.com
accuracy - Low-cost centimeter-level accurate satellite positioning (GNSS/ GPS) - Geographic Information Systems Stack Exchange
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Price history & Review on BEITIAN High Precision GPS module TTL level Build in 4M FLASH 1PPS 9600bps G-MOUSE BS-357 | AliExpress Seller - Beitian GNSS Store | Alitools.io