VacuumTubeEra
Reference
Materials - 1950's
Federal Selenium
Rectifier Replacement Guide (Excerpts) - 1955
29 Pages, 4.2 MB, .PDF
Metallic Rectifiers & Crystal
Diodes - 1958
157 Pages, 14.4 MB, .PDF
Sylvania
Tube Substitution Manual - 1953
39 Pages, 4.2 MB, .PDF
Selenium Rectifier Catalog
Excerpts
5 Pages, 740 KB, .PDF
Superior TD-55 Tube
Tester - Manual & Tube Data
25 Pages, 1.5 MB, .ZIP
Philco 9200 Tube Tester
Manual, Calibration &
Supplemental Tube Chart - c. 1958
20 Pages, 2.1 MB, .ZIP
The VTVM
How it Works
How to Use It
By Rhys Samuel - 1956
224 Pages, 35 MB, .ZIP Added June 2009
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