The QBF-8500-16500-50 from Qualwave is a Band Pass Filter with Frequency 8.5 to 16.5 GHz, Bandwidth 8000 MHz, Center Frequency 12500 MHz, Insertion Loss 1.5 dB, Upper Rejection 50 dB @17.8 to 19 GHz. Tags: Module with Connectors. More details for QBF-8500-16500-50 can be seen below.