The QBF-7300-8300-40 from Qualwave is a Band Pass Filter with Frequency 7.3 to 8.3 GHz, Bandwidth 1000 MHz, Center Frequency 7800 MHz, Insertion Loss 2 dB, Upper Rejection 40 dB @9 GHz. Tags: Module with Connectors. More details for QBF-7300-8300-40 can be seen below.