The AE412H9126 from Anatech Electronics is a RF High Pass Filter with Frequency 412 to 420 MHz, Insertion Loss 2 dB, Rejection 40 dBMin.@340 MHz (Rejection2: 70 dBMin.@341-355 MHz), Operating_Temperature -25 to 70 Degree C, Storage_Temperature -40 to 90 Degree C. Tags: PCB Mount, Lumped Component Filter. More details for AE412H9126 can be seen below.