The AM1030B653 from Anatech Electronics is a Band Pass Filter with Frequency 1.03 to 1.04 GHz, Bandwidth 10 MHz, Center Frequency 1030 MHz, Insertion Loss 2.5 dB, Upper Rejection 45 dB @ 1100 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1030B653 can be seen below.