The AM3050B1148 from Anatech Electronics is a Band Pass Filter with Frequency 3.015 to 3.085 GHz, Bandwidth 70 MHz, Center Frequency 3050 MHz, Insertion Loss 3 dB, Rejection 35 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM3050B1148 can be seen below.