The AM2593B1489 from Anatech Electronics is a Band Pass Filter with Frequency 2.496 to 2.69 GHz, Bandwidth 194 MHz, Center Frequency 2593 MHz, Insertion Loss 1.5 dB, Rejection 20 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2593B1489 can be seen below.