APARM2508S-SGL2L5 Stacked Patch Antenna Abracon APARM2508S-SGL2L5 Stacked Patch Antenna is a 25mm x 25mm x 8mm dual-stacked patch for GPS L1, L2, & L5. This Right-Hand Circular Polarized (RHCP) antenna offers a low Voltage Standing Wave Ratio (VSWR) of 1.8 and gain of 3.8dBi (L1), -0.3dBi (L2), -0.5dBi (L5). Typical applications include GPS L1, L2, and L5, as well as Internet of Things (IoT), Machine-to-Machine (M2M), geofencing, robotics, marine, autonomous vehicles, agriculture, and more.