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I copied this from the other thread that I made that can be found in Vintage Test Equipment. I think I titled it WTB Two Sets of Leads. At any rate a good fellow who calls himself NoPegs posted this and the link to a YouTube video that explains what I was trying to say. And yeah, I'll watch out for a ground loop. Your mention of transformerless "hot" chassis leads me to something that I have wondered for a while, but never posted anything about. What is the approach to using a scope or even other test equipment with a "hot" chassis? I'm sure it's simple and I will fell dumb when I hear the answer. Would an isolation transformer be the right way to go?
So anyway, here goes with what NoPegs said and that link: "The old scope probe is a no-go my friend. In short, they're not built with normal coax. For more detail you can watch https://www.youtube.com/watch?v=OiAmER1OJh4"
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"Face piles of trials with smiles, for it riles them to believe that you perceive the web they weave, and keep on thinking free"
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