The QBF-10200-12300-90 from Qualwave is a Band Pass Filter with Frequency 10.2 to 12.3 GHz, Bandwidth 2100 MHz, Center Frequency 11250 MHz, Insertion Loss 1 dB, Upper Rejection 90 dB @15.52 to 20 GHz. Tags: Module with Connectors. More details for QBF-10200-12300-90 can be seen below.