A new Band 5 wireless notch filter has been developed to protect the 800 MHz Public Safety Band from LTE Band 27 interference and emissions. The high Q design of part WSN-00418 provides minimal insertion loss in the two passbands (0.5 dB max. from 817 to 824 MHz, 1.25 dB max. from 862 to 863 MHz, and 0.6 dB max. from 863 to 869 MHz) and features steep roll-off to reject unwanted frequencies. Filter circuitry is housed in a rugged, weather-sealed package for use in unsheltered outdoor conditions.