The QBF-1000-1700-50 from Qualwave is a Band Pass Filter with Frequency 1 to 1.7 GHz, Bandwidth 700 MHz, Center Frequency 1350 MHz, Insertion Loss 1.7 dB, Upper Rejection 50 [email protected] to 2.2 GHz. Tags: Module with Connectors. More details for QBF-1000-1700-50 can be seen below.