The AB5590B544 from Anatech Electronics is a Band Pass Filter with Frequency 5.59 to 5.6 GHz, Bandwidth 10 MHz, Center Frequency 5590 MHz, Insertion Loss 1.75 dB, Upper Rejection 40 dB 5610-6200 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB5590B544 can be seen below.