The AM1800B1462 from Anatech Electronics is a Band Pass Filter with Frequency 1.75 to 1.85 GHz, Bandwidth 100 MHz, Center Frequency 1800 MHz, Insertion Loss 2 dB, Rejection 40 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1800B1462 can be seen below.