Saturday I fixed the AM radio in my '58 Nash Rambler. I have a Hickok tube tester. The vibrator was bad...(not THAT kind

). I took it apart and cleaned the points with ignition file. It works fine now.
I collect tube radios mostly 40s & 50s and transistor radios. Right now I'm working on an AM transmitter. Low power, it's one of those real estate sellers use "tune radio to 1510 to hear about this house". I want it set up to broadcast old music I can play on AM radios...hopefully 1/2 to 1 mile range or so.
I have my grandfather's radio he made from parts, he made the cabinet...before radios were sold. When he lived near Pittsburgh, Pa. in 1919, 1920. A "catwhisker"...no tubes.
His 1936 Packard had a radio and lots of people my Mother said had never heard of a radio in a car back then. She'll be 97 in March!