The QBF-18000-26500-30 from Qualwave is a Band Pass Filter with Frequency 18 to 26.5 GHz, Bandwidth 8500 MHz, Center Frequency 22250 MHz, Insertion Loss 1.2 dB, Upper Rejection 30 to 80 dB. Tags: Module with Connectors. More details for QBF-18000-26500-30 can be seen below.