The AM1542B964 from Anatech Electronics is a Band Pass Filter with Frequency 1.52 to 1.55 GHz, Bandwidth 34 MHz, Center Frequency 1542 MHz, Insertion Loss 2.5 dB, Upper Rejection 24dB @ 1626 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1542B964 can be seen below.