The FB4005 from Asartech is a Band Pass Filter with Frequency 4400 to 4950 MHz / 5250 to 5850 MHz, Bandwidth 1450 MHz, Center Frequency 4675 MHz @4400-4950 MHz / 5550 MHz @ 5250-5850 MHz, Insertion Loss 1 dB, Rejection 70 to 80 dB. Tags: Module with Connectors, Cavity Filter. More details for FB4005 can be seen below.