The PCTEL GPS-TMG-HR-26 timing reference antenna features a 26 dB amplifier
and narrow band high rejection filtering specifically designed to support
long-lasting, trouble-free deployments in congested cell-site applications
with severe interference around the GPS L1 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 radome shape sheds water and ice,
while eliminating problems associated with bird perching.