Adafruit ultimate gps breakout board mtk3339 chipset 66 channel version 3 adafruit 746 a b gps b breakout board designed around the b mtk3339 b chipset this high quality gps module can track up to 22 satellites on 66 channels and also features a built in antenna and 165db tracking high sensitivity receiver location update rate is up to 10 per second and power usage is only 20ma during navigation br br the module has a built in data logging capability that can log time date