Down the Rabbit Hole
I mentioned finding two old 20’s-era broadcast receivers in an earlier post. Some months had passed, and restoring the Freshman Masterpiece “5F5” seemed like a fun project and a quick win. The radio was designed to run on two batteries: an “A” or 6-volt battery for the tube filaments and a “B” or 90-volt battery for the plate voltage.
Christmas gifts for my two great-nephews are always a challenge, and with one entering the first grade, I wanted to up my game a little. The standard Lego-based gifts are always popular, but I sensed that something more involved might be a real hit. By the time I was in Grade School, I was fascinated by all things electrical and radio, so why not give them a crystal radio?