On the Cover The base-branding machine in the De Forest Radio Co. plant, ca. 1929. The five-pin basses rotate into contact with the branding die – the white object at lower center above the pipe elbow. Heated by a gas flame just below, it burns the De Forest script logo into the base. In this...
The Western Electric 7C22, a packaged push-pull radar oscilator. See story on p. 16 In this issue
On the Cover Two historically important cathode-ray tubes: the RCA 906, ca. 1935: and the tektronics T51, ca.1954. See Peter Keller,s synopsis of CRT history in this issue. In this issue
On the Cover The overall assembly drawing for a 36 tube, from RCA Standardizing notice 3-1-236, May 30, 1931 In this issue
On the Cover A variety of ’30’s-vintage tube ans carton labels from RCA In this issue
On the Cover On The Cover: A British playing card promoting the Mazda brand. In this issue
