The AM1800B1534 from Anatech Electronics is a Band Pass Filter with Frequency 1.7 to 1.9 GHz, Bandwidth 200 MHz, Center Frequency 1800 MHz, Insertion Loss 1.5 dB, Rejection 28 to 40 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1800B1534 can be seen below.