The BWBF-14R31/15R31 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 14.31 to 15.31 GHz, Center Frequency 14.81 GHz, Insertion Loss [email protected], Rejection =40 dB @12.7 & 16.9GHz, Upper Rejection 40 dB. Tags: Surface Mount. More details for BWBF-14R31/15R31 can be seen below.