The NBP-2000 from Stellant Systems is a Band Pass Filter with Frequency 1 to 1.25 GHz, Bandwidth 250 MHz, Center Frequency 1125 MHz, Insertion Loss 0.5 dB, Upper Rejection 50 dB @1.45 to 5 GHz. Tags: Module with Connectors. More details for NBP-2000 can be seen below.