The AM1740B1206 from Anatech Electronics is a Band Pass Filter with Frequency 1747.5 MHz, Center Frequency 1747.5 MHz, Insertion Loss 2.0 dB, Upper Rejection 15dB @ 1451-1677.5 MHz, Lower Rejection 34dB @ DC-1451 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1740B1206 can be seen below.