The AM2275B1604 from Anatech Electronics is a Band Pass Filter with Frequency 2.15 to 2.4 GHz, Bandwidth 250 MHz, Center Frequency 2275 MHz, Insertion Loss 1.5 dB, Rejection 15 to 45 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2275B1604 can be seen below.