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Thanks for the words of encouragement, Joe! I'm counting on communities like this to push me when I get stuck :)
I'm going on the line that for whatever circuit I don't understand, I will just have to learn how it works and more knowledge is never bad! I think this is a good thing for me to learn the inner workings of a radio so that when I start earning actual money and get something more "out of the box", I am not only blindly pressing the knobs but actually understand what is going on.

73 de 4OMAG