High Performance Passive GPS Antenna. The M1575HCT-22-P is a high performance passive antenna designed for the GPS L1 band, and built on proprietary Helicore® technology. This technology provides exceptional pattern control, polarization purity and high efficiency in a very compact form factor. The M1575HCT-22-P is designed for embedded applications and features an integrated 3-pin connector. This product is designed for applications requiring high quality reception of GPS signals. The ultra light design weighs only 2 grams making this antenna ideal for the most demanding, mechanically constrained platforms including handheld devices, asset tracking, seismic recording instruments and many more.