The QBF-12150-12350-60 from Qualwave is a Band Pass Filter with Frequency 12.15 to 12.35 GHz, Bandwidth 200 MHz, Center Frequency 12250 MHz, Insertion Loss 3 dB, Upper Rejection 60 [email protected] GHz. Tags: Module with Connectors. More details for QBF-12150-12350-60 can be seen below.