Been wanting to do a before and after for a while now. Did the NPC to the radio adjusted the resistor for 90-100% negative modulation and limiter in tact. Audio generator was kept the same through the videos till the last video. Second video was taken with R171 removed (limiter circuit). Last video , I had to increase the gain from the audio generator and the signal kinda took what looked to me like a JP36 modded radio going into over mod. Anyhow going back to NPC and placing the limiter back inline.