America has long had a strange ambivalence towards quality. In electronics, the elements of quality’s triple crown — performance, perks and price — are in constant contention. We always want more, for ...

[Mr. Carlson] has a really beautiful old 1949-era radio to restore and you can watch him do it in a comprehensive video, below. We aren’t sure what we were more amused by: the odd speaker that looks ...

An air-cooled 50-watt transmitting tube with 4-pin metal shell base, ceramic insulator, and rugged plate. GE and old RCA logos stamped on envelope. Base stamped: "Radiotron / Model UV-203 / 50 Watts / ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. A 7-pin plastic base with cylindrical ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Fig. 1: RCA relay tubePrelude: Before World War II began, it was clear that some sort of ...