The AM1575B316 from Anatech Electronics is a Band Pass Filter with Frequency 1.57 to 1.58 GHz, Bandwidth 2 MHz, Center Frequency 1575 MHz, Insertion Loss 1.0 dB, Upper Rejection 17 dB 1625.4 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1575B316 can be seen below.