The UF9978 from MtronPTI is a Band Pass Filter with Frequency 1.025 to 1.15 GHz, Bandwidth 4 MHz, Center Frequency 1087.5 MHz, Insertion Loss 1.5 to 2 dB, Rejection 80 dB. Tags: Module with Connectors, Cavity Filter. More details for UF9978 can be seen below.