The BWBF-11R2/13 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 11.2 to 13 GHz, Center Frequency 12.1 GHz, Insertion Loss [email protected], Rejection =40 dB @9.8GHz, =30 dB @14.65GHz, Upper Rejection 30 dB. Tags: Surface Mount. More details for BWBF-11R2/13 can be seen below.