The NBP-2001 from Stellant Systems is a Band Pass Filter with Frequency 1.25 to 1.40 GHz, Bandwidth 150 MHz, Center Frequency 1325 MHz, Insertion Loss 0.5 dB, Upper Rejection 50 dB @1.6 to 5 GHz. Tags: Module with Connectors. More details for NBP-2001 can be seen below.