GPS Units Compared - BN-220 vs BN-880 vs BN-880Q for iNav, Ardupilot or Betaflight - YouTube
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Beitian BN-220 GPS Module | hobbybitz.co.uk
Beitian BN220 GPS installation + test - YouTube
Beitian GPS GLONASS BN-220 BN-880 Dual GPS module built in FLASH M8030 TTL Level for RC Drone CC3D F3 Flight Controller Pixhawk - Buy cheap in an online store with delivery: price