Radio Articles
The Troubleshooter - "Identifying Power Transformer Windings"
Unfortunately, many of the older transformers,
especially those with woven cloth insulation on the wires, lack any kind
of color coding for winding identification. Many years ago one of our HVRA members described how
he identified unknown windings using a volt ohmmeter and a 25 Watt light
bulb.
Shop Talk - "The Black Plague in I.F.
Transformers"
If you have never heard of the "black plague" then don't
feel too bad - this malady has only recently been identified and addressed.
Shop Talk - "Polarized Plugs - AC Line
Safety"
Those old radios are great, but sometimes we forget they weren't
as safe as we now expect them to be. I still remember a shock I received
from a television knob when I was a bare-foot kid! Learn how to properly
install a new line cord on your radios.
Shop Talk - "Application of Wrinkle Paint"
Learn how to duplicate the wrinkled finish on the old metal radios.
Various members of the Internet radio community discuss their techniques.
Shop Talk -" Zenith I.F. Problems"
Little-known facts about Zenith interstage radio frequency transformers
and how they may affect sensitivity and the tuning eye.
Shop Talk - "Transformer Construction
in Early Radios"
Explanations and remedies for bad interstage transformers in early
battery sets.
Shop Talk - "Charts and Conversion Tables"
Charts for resistors, capacitors, miniature lamps and tubes. All sorts
of conversions to assist calculations.
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