PCTEL's 8111D-HR antenna is a dual band, high rejection antenna covering both the GPS L1 and GLONASS L1 frequencies. PCTEL's proprietary SkyLink (TM) filtering design allows wideband coverage while achieving superior out-of-band rejection. This antenna is ideal for any global GPS/GLONASS tracking application that requires an externally mounted antenna. Using internal magnets or screw mount holes, the antenna can be installed almost anywhere on a vehicle allowing for greater flexibility.