There’s still a mystique around vacuum tubes long after they were rendered obsolete by solid state devices, and many continue to experiment with them. They can be bought new, but most of us still come ...

Some of the most popular and sought-after models of tube testers today for antique radio and vintage audio service are military surplus. Popular models of military tube testers for use today were ...

Believe it or not, every Radio Shack – hell, almost every drugstore – once had a tube tester sitting at the back, available for all to use. Pulling a bunch of tubes out of a malfunctioning radio or TV ...