The QBF-25500-27000-30 from Qualwave is a Band Pass Filter with Frequency 25.5 to 27 GHz, Bandwidth 1500 MHz, Center Frequency 26250 MHz, Insertion Loss 1.5 dB, Upper Rejection 60 to 66 dB. Tags: Module with Connectors. More details for QBF-25500-27000-30 can be seen below.