The ERZ-BPF-0350-0380-2.4 from ERZIA is a Band Pass Filter with Frequency 3.5 to 3.8 GHz, Insertion Loss 2.2 to 2.4 dB, Rejection 30 dB @3.13 GHz & 4.15 GHz, 60 [email protected] GHz & 4.27 GHz, Power 10 W, Return Loss 17.3 to 18 dB. Tags: Module with Connectors, Suspended Substrate Filter. More details for ERZ-BPF-0350-0380-2.4 can be seen below.