The AM2492B388 from Anatech Electronics is a Band Pass Filter with Frequency 2.48 to 2.5 GHz, Bandwidth 16.5 MHz, Center Frequency 2491.5 MHz, Insertion Loss 0.38 dB, Upper Rejection 55dB @ 1610-1625 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM2492B388 can be seen below.