The QBF-8500-9500-40 from Qualwave is a Band Pass Filter with Frequency 8.5 to 9.5 GHz, Bandwidth 1000 MHz, Center Frequency 9000 MHz, Insertion Loss 2 dB, Upper Rejection 40 dB @10.3 GHz. Tags: Module with Connectors. More details for QBF-8500-9500-40 can be seen below.