The AM411B1522 from Anatech Electronics is a Band Pass Filter with Frequency 409.5 to 411.5 MHz, Bandwidth 2 MHz, Center Frequency 410.5 MHz, Insertion Loss 5.5 dB, Rejection 25 to 25 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM411B1522 can be seen below.