The QBF-14000-18000-75 from Qualwave is a Band Pass Filter with Frequency 14 to 18 GHz, Bandwidth 4000 MHz, Center Frequency 16000 MHz, Insertion Loss 0.7 dB, Upper Rejection 75 dB @20 GHz. Tags: Module with Connectors. More details for QBF-14000-18000-75 can be seen below.