The BP26C from PLEXSA MANUFACTURING is a Band Pass Filter with Frequency 2 to 6 GHz, Insertion Loss 2.0 to 2.7 dB, Rejection 50 to 80 dB, Lower Rejection 50 to 80 dB, Return Loss 9.5 dB. Tags: Module with Connectors. More details for BP26C can be seen below.