The AM2100B1302 from Anatech Electronics is a Band Pass Filter with Frequency 2.017 to 2.183 GHz, Bandwidth 166 MHz, Center Frequency 2100 MHz, Insertion Loss 1.5 dB, Rejection 25 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2100B1302 can be seen below.