The BPF-37000-6000-C5 from COTS RF is a Band Pass Filter with Frequency 34000 to 40000 MHz, Bandwidth 6000 MHz @ 3 dB, Center Frequency 37000 MHz, Insertion Loss 3 dB, Rejection 30dB @ 27000 & 45000 MHz. Tags: Module with Connectors. More details for BPF-37000-6000-C5 can be seen below.