The BWBF-4/7R5-7C3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 4.5 to 7 GHz, Center Frequency 5.75 GHz, Insertion Loss [email protected], Rejection =30 dB @2.8GHz&9GHz, Upper Rejection 30 dB. Tags: Surface Mount. More details for BWBF-4/7R5-7C3 can be seen below.