RadioLink U-blox NEO-M8N GPS SE100 UBX-M8030 with Mount Holder for Pix Px4 Pixhawk APM CC3D F3 Flight Controller

$18.97 (as of January 5, 2018, 11:05 pm)

50 centimeters position accuracy. Supper valley sation-keeping ability. Positioning 20 satellites in 6 seconds ata open ground.
Gps decoder chip:radiolink m8n gps,with u-box ubx-m8030(m8),72-channel,mmic bga715l7 from infineon,is much better than single gnss 7n.
Double filter:sawf(surface acoustic wave filter) form murata. Antenna:2. 5dbi high gain and selectivity ceramic antenna.