[Mr. Carlson] has an old-style 1940-era radio tube tester, the kind that used to inhabit grocery and drug stores. It is in amazing condition and he was kind enough to tear it down for us. The tester ...

In August we ran a few photos of Steve Johnson’s excellent collection of radios. This month, we’re tuning in on his tube testers. All information courtesy of Steve’s website. Confidence Special First, ...

From the late 1920s through the 1950s radio and television repair shops were almost as common as drug stores. Back then you could take your radio, TV, or record player to your neighborhood shop and ...

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 ...

Marked: "DAYRAD Tube Checker / Mfd. by the Radio Products Co., Dayton, Ohio. / Licensed Under Weston Patent 1704566 Type B". Includes leather carrying strap. Tube tester designed for A.C. plug in ...

[Eric] has an Atwater Kent 55C AM radio from the early 1900’s. He’s been trying to restore the radio to proper working condition. His most recent pain has been with the rectifier tube. The tube is ...

Keysight Technologies has introduced its first PXI-based radio test reference system with an audio library for military and public safety radios. According to Keysight, the PXI modular test platform ...

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 ...