Vol. 19, No. 2

Volume 19 - No. 2

On the Cover

In this issue
  • The Lenkurt Tube Mystery Odd choice of tubes used by Kenkurt.
  • #45 Tube Substitutes Various ways to adapt tubes to perform with the characteristics of another.
  • A “Holier Than Thou” 7B7 Possible explanation for the 7B7 being made with an odd choice of meterials.
  • The “General” Is Coming! Steps taked to make the best impression to the President of RCA.
  • Sodion Tubes – Don’t Try This At Home! Problems cleaning dirty Sodion tubes.
  • Development of the Power Pentode in the U.S. Late introduction of power pentode tubes made in the U.S.
  • Stromberg-Carlson 8-80 Amplifier Advertisement for the 8-80 stereo amplifier.
  • The Altec TV Set! The famous audio amplifier maker tries entering the TV market.
  • From DeForest’s Notebook DeForest’s notebook seems to show his development style to be experimental more than electronic analysis.

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