The FBF-117 from Metropole Products Inc. is a Band Pass Filter with Frequency 243 to 270 MHz, Bandwidth 27 MHz, Center Frequency 256.5 MHz, Insertion Loss 1.2 dB, Rejection 60 dB - 90 dB @ 0 - 2500 MHz. Tags: Module with Connectors. More details for FBF-117 can be seen below.