The AM1583B1513 from Anatech Electronics is a Band Pass Filter with Frequency 1570.25 to 1596.75 MHz, Bandwidth Fo 26.5 MHz, Center Frequency 1583.5 MHz, Insertion Loss 1.9 dB, Rejection 25 to 60 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1583B1513 can be seen below.