The AM947S104 from Anatech Electronics is a Band Pass Filter with Frequency 947.5 MHz, Center Frequency 947.5 MHz, Insertion Loss 2.9 to 4.3 dB, Upper Rejection 47 dB 1050-1095 MHz, Lower Rejection 47 dB, 800-900 MHz. Tags: Surface Mount, RF SAW Filter. More details for AM947S104 can be seen below.