The BFHK-8501+ from Mini Circuits is a Band Pass Filter with Frequency 7500 to 8800 MHz, Bandwidth 1300 MHz, Center Frequency 8.1 GHz, Insertion Loss 3.1 to 4.5 dB, Upper Rejection 80 to 90 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BFHK-8501+ can be seen below.