The NBP-2007 from Stellant Systems is a Band Pass Filter with Frequency 3.70 to 4.20 GHz, Bandwidth 500 MHz, Center Frequency 3950 MHz, Insertion Loss 0.4 dB, Upper Rejection 50 dB @4.8 to 12 GHz. Tags: Module with Connectors. More details for NBP-2007 can be seen below.