The AM2002B1421 from Anatech Electronics is a Band Pass Filter with Frequency 1.95 to 2.06 GHz, Bandwidth 105 MHz, Center Frequency 2002.5 MHz, Insertion Loss 1.2 dB, Rejection 44 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2002B1421 can be seen below.