The AM1090B1181 from Anatech Electronics is a Band Pass Filter with Frequency 1075 to 1105 MHz, Bandwidth 30 MHz, Center Frequency 1090 MHz, Insertion Loss 2.7 to 3 dB, Rejection 30 to 55 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM1090B1181 can be seen below.