The QBF-12700-13300-40 from Qualwave is a Band Pass Filter with Frequency 12.7 to 13.3 GHz, Bandwidth 600 MHz, Center Frequency 13000 MHz, Insertion Loss 1.5 dB, Upper Rejection 40 dB @13.7 GHz. Tags: Module with Connectors. More details for QBF-12700-13300-40 can be seen below.