The ZX75BP-1280-S+ from Mini Circuits is a Band Pass Filter with Frequency 1170 to 1390 MHz, Center Frequency 1280 MHz, Insertion Loss 0.8 to 2 dB, Upper Rejection 20 to 27 dB, Lower Rejection 20 to 35 dB. Tags: Module with Connectors, Ceramic Filter. More details for ZX75BP-1280-S+ can be seen below.