The AM1503B1395 from Anatech Electronics is a Band Pass Filter with Frequency 1.49 to 1.50 GHz, Bandwidth 7.5 MHz, Center Frequency 1503.4 MHz, Insertion Loss 2 dB, Upper Rejection 22 dB @ 1447.9-1462.9 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1503B1395 can be seen below.