The QBF-9000-10000-40 from Qualwave is a Band Pass Filter with Frequency 9 to 10 GHz, Bandwidth 1000 MHz, Center Frequency 9500 MHz, Insertion Loss 2 dB, Upper Rejection 40 dB @10.6 GHz. Tags: Module with Connectors. More details for QBF-9000-10000-40 can be seen below.