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The Daystrom / Weston CA-1630 Electron Tube Analyzer – by John Staples W6BM

The colorful CA-1630 is more than just a drug-store tube tester, rather, it is a precision laboratory-grade equipment to accurately measure the transconductance of a wide variety of vacuum tubes. Its vintage is late 1950s or early 1960s. The tester was recapped and realigned October 2017, and prepared for use. The tester measures the transconductance of vacuum tubes. Transconductance is the characteristic of a tube that measures its ability to amplify a signal.

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This Post Has 4 Comments

    1. I am restoring a New London 901A tester. The only technical information I can find is a circuit for the power supply. Do you have anything on the rest of the tester? I really need the circuit for the oscillator and some setup/calibration info.
      Thanks, John

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