The QBF-8700-12800-35 from Qualwave is a Band Pass Filter with Frequency 8.7 to 12.8 GHz, Bandwidth 4100 MHz, Center Frequency 10750 MHz, Insertion Loss 0.5 dB, Upper Rejection 35 dB @14 GHz. Tags: Module with Connectors. More details for QBF-8700-12800-35 can be seen below.