The AM2220B1281 from Anatech Electronics is a Band Pass Filter with Frequency 2.04 to 2.4 GHz, Bandwidth 360 MHz, Center Frequency 2220 MHz, Insertion Loss 2.0 dB, Upper Rejection 20dB @ 2535 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM2220B1281 can be seen below.