Top Configuration: GPS
decoder chip: Radiolink SE100, with Ublox M10050, is much better than a single GNSS 7N. Built-in high-precision electronic compass IST8310 (I2C port).
Antenna: 2.5 dbI high gain and selectivity ceramic chip antennas. Power amplify
IC: High-gain MMIC chip.
Double Filter: two-stage SAWF (Surface acoustic wave filter) from Murata.
Compatible with Pixhawk Flight Controller, 1.89 * 1.6 * 0.59 in, suitable for DIY drone, quadcopter, multi-copter, rc vehicle's, etc.