The AB4512B1058 from Anatech Electronics is a Band Pass Filter with Frequency 4.4 to 4.63 GHz, Bandwidth 225 MHz, Center Frequency 4512 MHz, Insertion Loss 1 dB, Upper Rejection 90dB @ 4700 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB4512B1058 can be seen below.