APAKM3513-SGL2 Stacked Patch Antenna Abracon APAKM3513-SGL2 Stacked Patch Antenna is specifically designed for GPS L1 and L2 applications. This patch antenna is made out of ceramic material and features low Voltage Standing Wave Ratio (VSWR). The APAKM3513-SGL2 ceramic patch antenna facilitates circular polarization with 3.1dBi gain for GPS L1 and 1.2dbBi gain for GPS L2. This APAKM3513-SGL2 antenna operates at 1575.42MHz frequency for GPS L1 and 1227.60MHz frequency for GPS L2. The Abracon APAKM3513-SGL2 Stacked Patch Antenna is ideal for remote technology monitoring, geofencing, navigation, surveying, logistics, drones, and transportation.