The M1516HCT helical GPS/GLONASS antenna is a low-profile professional-grade antenna covering the GPS L1, GLONASS L1 frequency band. This passive antenna is designed for precision handhelds, industrial, agricultural, government, and military applications and offers excellent gain performance, axial ration, multipath rejection, and out-of-band signal rejection. At 48 2 18 millimeters, the M1516HCT features a housed weatherproof single helical element and comes standard with an SMA or TNC connector.