The QBF-8000-11000-45 from Qualwave is a Band Pass Filter with Frequency 8 to 11 GHz, Bandwidth 3000 MHz, Center Frequency 9500 MHz, Insertion Loss 0.65 dB, Upper Rejection 80 dB@16 to 22 GHz. Tags: Module with Connectors. More details for QBF-8000-11000-45 can be seen below.