The AM243S336 from Anatech Electronics is a Band Pass Filter with Frequency 243.25 to 244.65 MHz, Bandwidth 1.4 MHz, Center Frequency 243.95 MHz, Insertion Loss 3.5 dB, Upper Rejection 40 dB 275-295 MHz. Tags: Surface Mount, RF SAW Filter. More details for AM243S336 can be seen below.