The BWBF-7/9 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7 to 9 GHz, Center Frequency 8 GHz, Insertion Loss 2.7@8GHz, Rejection =40 dB @6GHz, =30 dB @10.05GHz, Upper Rejection 30 dB. Tags: Surface Mount. More details for BWBF-7/9 can be seen below.