The QBF-8400-11400-50 from Qualwave is a Band Pass Filter with Frequency 8.4 to 11.4 GHz, Bandwidth 3000 MHz, Center Frequency 9900 MHz, Insertion Loss 1 dB, Upper Rejection 50 dB @13.8 to 18 GHz. Tags: Module with Connectors. More details for QBF-8400-11400-50 can be seen below.