Originally Posted by kennyc
I'm remembering having one of these Ham Radio Transmitters when I was a kid
(and doing a bit of memoir writing about it)
In a lot of ways electronics was a lot more fun before the advent of microchips. I've built a few things myself, and my father was constantly building things he'd read the plans for in Popular Mechanics or Popular Science, including a "big ear" that allowed us to spy on conversations a block away and a working theremin.