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My uncle, who is credited for getting me into radio and TV's gave me a complete set of NRI radio courses from around 1938 or so. J.E.Smith had a "pep talk" page on the back of each course issue.
I read them all, and started fixing old 5 tube radios when I was around 11 years old.
I bought an NRI TV course in 1974 from a friend that blew up the first circuit he built... I think it was the power supply for the oscilloscope... He wired all the capacitors positives to ground, IIRC... After I built everything, I had a little better understanding of how solid state stuff worked. I never used that little scope. It wasn't good for much. It still works, though, as I plug it in and let it run now and then. The 25V color TV I built still exists, too. I took the CRT out of it and put it in an RCA CTC 74 (?) the one with the vertical chassis and all the modules... There's an old Magnavox CRT in the Conar set now. It looks pretty decent for its age.
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