The QBF-1500-1600-45 from Qualwave is a Band Pass Filter with Frequency 1.5 to 1.6 GHz, Bandwidth 100 MHz, Center Frequency 1550 MHz, Insertion Loss 3 dB, Upper Rejection 45 [email protected] GHz. Tags: Module with Connectors. More details for QBF-1500-1600-45 can be seen below.