The GPS-TMG-HR-26 series timing reference antennas feature narrow band, high rejection filtering to support long-lasting, trouble-free deployments in congested cell-site applications with severe interference around the GPS frequency. The proprietary quadrifiliar helix design, coupled with multi-stage filtering provides superior out-of-band rejection and lower elevation pattern performance than traditional patch antennas. The unique proprietary radome shape sheds water and ice, and eliminates bird perching problems. The antenna label and collar mount are color coded red for differentiation purposes. The GPS-TMG-HR-26NCM includes red powder coated collar mount (GPS-TMG-MNT-R) Base mounting hardware kit.