The QBF-10000-10500-45 from Qualwave is a Band Pass Filter with Frequency 10 to 10.5 GHz, Bandwidth 500 MHz, Center Frequency 10250 MHz, Insertion Loss 1 dB, Upper Rejection 45 dB @11 GHz. Tags: Module with Connectors. More details for QBF-10000-10500-45 can be seen below.