The AE172L8905 from Anatech Electronics is a Low Pass RF Filter with Frequency DC to 172 MHz, 3 dB Cutoff Frequency 172 MHz, Insertion Loss 1 to 3 dB, Rejection 15 to 50 dB, Return Loss 15 dB. Tags: Module with Connector. More details for AE172L8905 can be seen below.