The BP2-6B from PLEXSA MANUFACTURING is a Band Pass Filter with Frequency 2 to 6 GHz, Insertion Loss 1.6 to 3.0 dB, Rejection 60 to 80 dB, Lower Rejection 60 to 80 dB, Return Loss 9 to 10 dB. Tags: Module with Connectors. More details for BP2-6B can be seen below.