The AM1740B985 from Anatech Electronics is a Band Pass Filter with Frequency 1718 to 1762 MHz, Bandwidth Nominal Fo ± 21 MHz, 22 MHz Max, Center Frequency 1740 MHz, Insertion Loss 4.5 dB, Rejection 42 to 45 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1740B985 can be seen below.