The AE303KL7840 from Anatech Electronics is a Low Pass RF Filter with Frequency DC to 303 KHz, 3 dB Cutoff Frequency 303 KHz, Insertion Loss 0.8 dB, Rejection 50 dB, Power 200 W. Tags: Module with Connector, Lumped Component Filter. More details for AE303KL7840 can be seen below.