The AB4887B1059 from Anatech Electronics is a Band Pass Filter with Frequency 4.78 to 5 GHz, Bandwidth 225 MHz, Center Frequency 4887 MHz, Insertion Loss 1 dB, Upper Rejection 90dB @ 5075 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB4887B1059 can be seen below.