The BPF-1240-20-C5 from COTS RF is a Band Pass Filter with Frequency 1230 to 1250 MHz, Bandwidth 20 MHz @ 3 dB, Center Frequency 1240 MHz, Insertion Loss 2.5 dB, Rejection 50 dB @ 1067 & 1133 MHz. Tags: Module with Connectors. More details for BPF-1240-20-C5 can be seen below.