Category: Magazines

On the Cover George Fathauer makes a tubish point at the TCA meeting at Rochester In this issue

A fine old WECo (pre Bell Labs) shot of a “tennis-ball” repeater tube. Source: Jerry Vanicek.   In this issue

Even the family cat likes Philips-Mullard tubes! Brochure from Sibley Collection.   In this issue

An Eimac 8351/4CV100,000 vapor-cooled tetrode, of the type used in one of the Collins 250-kW transmitters, now removed, at the Voice of America transmitting site outside Delano, California. It is accompanied by its much smaller vcousin, a mere 4-1000.   In this issue

Part of a fine collection of developmental metal tubes. See inside for more details Photos: Bob Millard.   In this issue

Soviet-era transmitter technician tests at the fuse panel. From Radio magazine, March 1954   In this issue

A family of Philips Innoval tubes – left to right, 6BH5, 6M5, 12AN7, 6N8, and 6AN7. Photo: Daniel Stocks.   In this issue