The QBF-2483.55-2499.95-40 from Qualwave is a Band Pass Filter with Frequency 2.48355 to 2.49995 GHz, Bandwidth 16.4 MHz, Center Frequency 2491.75 MHz, Insertion Loss 1 dB, Upper Rejection 40 to 60 dB. Tags: Module with Connectors. More details for QBF-2483.55-2499.95-40 can be seen below.