Hi richard, I put together a 455kc 10.7mhz signal inje like you did. i put a single pole double throw switch. i put the center pole on 1st am and fm amp. grid one 12ba6 i put one side of switch to fm-am conv and put the orther side to a rca plug.made a very good siganl tracer. you can switch inje to tracer like to know what you think.....johnny ...got to have shielded wire....zenith am. fm. hi rich, you need to put a 2meg bleeder resister across that singal tracer cap. it will work much better. rich, i am not set up to do video. maybe you can do something with it. it sure works good. it work as good as my NRI model 34 signal tracer. rich you do not need to respond to this email...hope i am not bugging you to much.....johnny Build a AF & RF Signal Tracer www.youtube.com Zenith H723 www.nostalgiaair.org Build a 455KC 10.7MHz Signal Injector
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