The ERZ-BPF-0205-0255-2.2 from ERZIA is a Band Pass Filter with Frequency 2.05 to 2.55 GHz, Insertion Loss 1.7 to 2.2 dB, Rejection 30 dB @1.89 GHz & 2.77 GHz, 60 [email protected] GHz & 2.88 GHz, Power 10 W, Return Loss 13.8 to 15 dB. Tags: Module with Connectors, Suspended Substrate Filter. More details for ERZ-BPF-0205-0255-2.2 can be seen below.