The QBF-12600-18000-50 from Qualwave is a Band Pass Filter with Frequency 12.6 to 18 GHz, Bandwidth 5400 MHz, Center Frequency 15300 MHz, Insertion Loss 1 dB, Upper Rejection 50 dB @20.7 to 22 GHz. Tags: Module with Connectors. More details for QBF-12600-18000-50 can be seen below.