The QBF-43500-49500-20 from Qualwave is a Band Pass Filter with Frequency 43.5 to 49.5 GHz, Bandwidth 6000 MHz, Center Frequency 46500 MHz, Insertion Loss 1.5 dB, Upper Rejection 20 to 40 dB. Tags: Module with Connectors. More details for QBF-43500-49500-20 can be seen below.