The AM1582B1578 from Anatech Electronics is a Band Pass Filter with Frequency 1555 to 1610 MHz, Bandwidth 55 MHz, Center Frequency 1582.5 MHz, Insertion Loss 3.5 dB, Rejection 10 to 25 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1582B1578 can be seen below.