The QBF-1050-2250-30 from Qualwave is a Band Pass Filter with Frequency 1.05 to 2.25 GHz, Bandwidth 1200 MHz, Center Frequency 1650 MHz, Insertion Loss 5 dB, Upper Rejection 60 dBc@3 GHz. Tags: Module with Connectors. More details for QBF-1050-2250-30 can be seen below.