The BPF-1200-500-L9 from COTS RF is a Band Pass Filter with Frequency 950 to 1450 MHz, Bandwidth 500 MHz @ 3 dB, Center Frequency 1200 MHz, Insertion Loss 1 dB, Rejection 20dB @ 900 & 1500 MHz. Tags: Module with Connectors. More details for BPF-1200-500-L9 can be seen below.