The HD31336 from HD Communications Corp is a Band Pass Filter with Frequency 1930 to 1990 MHz, Center Frequency 1960 MHz, Insertion Loss 1.8 to 2.5 dB, Rejection 35 dB, Upper Rejection 35 dB @ 2050 MHz. Tags: Module with Connectors, RF SAW Filter. More details for HD31336 can be seen below.