The AM3687B1079 from Anatech Electronics is a Band Pass Filter with Frequency 3674.5 to 3699.5 MHz, Bandwidth 25 MHz, Center Frequency 3687 MHz, Insertion Loss 2.5 dB, Rejection 13 to 40 dB. Tags: Surface Mount, Ceramic, Ceramic Filter, Monoblock Filter. More details for AM3687B1079 can be seen below.