The AM3000B1373 from Anatech Electronics is a Band Pass Filter with Frequency 2.9 to 3.1 GHz, Bandwidth 200 MHz, Center Frequency 3000 MHz, Insertion Loss 2.5 dB, Upper Rejection 40 dB @ 3600 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM3000B1373 can be seen below.