The AM1030B386 from Anatech Electronics is a Band Pass Filter with Frequency 1.02 to 1.04 GHz, Bandwidth 20 MHz, Center Frequency 1030 MHz, Insertion Loss 3.0 dB, Upper Rejection 40 dB @ 1060 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1030B386 can be seen below.