The AE420L8961 from Anatech Electronics is a Low Pass RF Filter with Frequency 100 to 420 MHz, 3 dB Cutoff Frequency 420 MHz, Insertion Loss 0.6 dB, Rejection 25 to 30 dB, Return Loss 14 dB. Tags: Module with Connector. More details for AE420L8961 can be seen below.