The AM1842B1400 from Anatech Electronics is a Band Pass Filter with Frequency 1.72 to 1.96 GHz, Bandwidth 240 MHz, Center Frequency 1842.5 MHz, Insertion Loss 2 dB, Upper Rejection 15 dB @ 1992.5 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1842B1400 can be seen below.