The QBF-40000-53000-40 from Qualwave is a Band Pass Filter with Frequency 40 to 53 GHz, Bandwidth 13000 MHz, Center Frequency 46500 MHz, Insertion Loss 1.4 dB, Upper Rejection 40 to 80 dB. Tags: Module with Connectors. More details for QBF-40000-53000-40 can be seen below.