The QBF-5000-6000-45 from Qualwave is a Band Pass Filter with Frequency 5 to 6 GHz, Bandwidth 1000 MHz, Center Frequency 5500 MHz, Insertion Loss 1.5 dB, Upper Rejection 45 [email protected] to 13 GHz. Tags: Module with Connectors. More details for QBF-5000-6000-45 can be seen below.