There’s an unknown piece of military electronic gear being investigated over on [Usagi Electric]’s YouTube channel (see video below the break). The few markings and labels on the box aren’t terribly ...

A plastic 6-pin base with domed envelope. Donor’s card reads: “Electron-ray tube, glass type, made by the Radio Corporation of America in the early 1930s. An early model of the “magic eye” tuning ...

We’re used to low cost parts and a diversity of electronic functions to choose from in our projects, to the extent that our antecedents would be green with envy. Back when tubes were king, electronics ...