The QBF-4960-4980-70 from Qualwave is a Band Pass Filter with Frequency 4.96 to 4.98 GHz, Bandwidth 20 MHz, Center Frequency 4970 MHz, Insertion Loss 0.8 dB, Upper Rejection 50 to 70 dB. Tags: Module with Connectors. More details for QBF-4960-4980-70 can be seen below.