The BPF-1957.5-15-C5 from COTS RF is a Band Pass Filter with Frequency 1950 to 1965 MHz, Bandwidth 15 MHz @ 3 dB, Center Frequency 1957.5 MHz, Insertion Loss 2.6 dB, Rejection 40dB @ 1930 & 1985 MHz. Tags: Module with Connectors. More details for BPF-1957.5-15-C5 can be seen below.