The AM1260B1531 from Anatech Electronics is a Band Pass Filter with Frequency 1249.5 to 1270.5 MHz, Bandwidth 21 MHz, Center Frequency 1260 MHz, Insertion Loss 3 dB, Rejection 20 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1260B1531 can be seen below.