Category: Volume 10

Daniel Stocks, Australian microwave-tube expert, left visits Ron Lawrence and his “Radio Heaven” display in North Carolina. Photo: Robert Lozier.   In this issue

The Eimac X-8 triode of July, 1942, one of the Umpteen proto-types that led to the 527 power tube.   In this issue

Removing sealed-off tubes from a small Sealex machine at the De Forest Radio Co. plant in Passaic, NJ, about 1931.   In this issue

Lee De Forest jollies-up with Roy Weagant, namesake of a family of external-controlled tubes of ca. 1919. The picture was taken in the officees of Sheffield and Betts, patent attorneys in New York. The origianal caption was “When Grid and Gridless Meet. Phot: Jerry Vanicek.   In this issue

The rare and prestigious Western Electric/Signal Corps VT-3. Photo by Bill Condo The rare and prestigious Western Electric/Signal Corps VT-3. Photo by Bill Condon In this issue

The Western Electric 7C22, a packaged push-pull radar oscilator. See story on p. 16   In this issue