The AM1517B1644 from Anatech Electronics is a Band Pass Filter with Frequency 1490 to 1545 MHz, Bandwidth 55 MHz(-3dB Bandwidth), Center Frequency 1517.5 MHz, Insertion Loss 3 dB, Rejection 15 to 30 dB. Tags: Module with Connectors, Ceramic, Ceramic Filter. More details for AM1517B1644 can be seen below.