The AM1500B1603 from Anatech Electronics is a Band Pass Filter with Frequency 1450 to 1550 MHz, Bandwidth 100 MHz(-1 dB Bandwidth), Center Frequency 1500 MHz, Insertion Loss 1.5 dB, Rejection 90 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1500B1603 can be seen below.