The QBF-4633-4978-50 from Qualwave is a Band Pass Filter with Frequency 4.633 to 4.978 GHz, Bandwidth 345 MHz, Center Frequency 4805.5 MHz, Insertion Loss 0.9 dB, Upper Rejection 50 to 80 dB. Tags: Module with Connectors. More details for QBF-4633-4978-50 can be seen below.