The BWBF-21R5/26R7 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 21.5 to 26.7 GHz, Center Frequency 24.1 GHz, Insertion Loss [email protected], Rejection =20 dB @19.1&29.4GHz, =40 dB @18.3&31.2GHz, Upper Rejection 20 to 40 dB. Tags: Surface Mount. More details for BWBF-21R5/26R7 can be seen below.