Recently I noticed an irresistible offer on Craigslist: a Majestic 3C70 AM/shortwave radio for just US $50. This model dates from the 1930s, when such radios came in gorgeous wooden cabinets. The ...

If you work on old equipment, you know that there’s always that tense moment when you first plug it in and turn it on. No matter how careful you have been, there’s some chance your garage sale find is ...