The QBF-20600-25000-60 from Qualwave is a Band Pass Filter with Frequency 20.6 to 25 GHz, Bandwidth 4400 MHz, Center Frequency 22800 MHz, Insertion Loss 2 dB, Upper Rejection 60 dB @26.8 GHz. Tags: Module with Connectors. More details for QBF-20600-25000-60 can be seen below.