Antique Electronics and Vintage Solid State
Mike Higgins' Hickok tube tester calibration monograph
Update: note new URLs.
- http://www.byan-roper.org/m_higgins/2017-539bc-Calibration.html
- http://www.byan-roper.org/m_higgins/2017-539bc-Calibration.pdf
I'm honored that Mike Higgins has allowed me to host his monograph …
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