The AM1842B1679 from Anatech Electronics is a Band Pass Filter with Frequency 1.8045 to 1.8795 GHz, Bandwidth 75 MHz, Center Frequency 1842 MHz, Insertion Loss 2.1 dB, Rejection 20 to 24 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1842B1679 can be seen below.