The AE15L9173 from Anatech Electronics is a Low Pass RF Filter with Frequency DC to 15.8 MHz, 3 dB Cutoff Frequency 15 to 15.8 MHz, Insertion Loss 2 dB, VSWR 1.50:1, Operating_Temperature -55 to 85 Degree C. Tags: Module with Connector. More details for AE15L9173 can be seen below.