The BWBF-26/28R5 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 26 to 28.5 GHz, Center Frequency 27.25 GHz, Insertion Loss [email protected], Rejection =40 dB @23.5GHz, =30 dB @30.8GHz, Upper Rejection 30 dB. Tags: Surface Mount. More details for BWBF-26/28R5 can be seen below.