The BFCV-2792+ from Mini Circuits is a Band Pass Filter with Frequency 27.5 to 28.35 GHz, Center Frequency 28.3 GHz, Insertion Loss 3 dB, Upper Rejection 12 to 22 dB, Lower Rejection 20 to 42 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BFCV-2792+ can be seen below.