A little gadget was found in an article in QST, made with 1 pair of powerpole connectors a resistor and two leds
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About A quick polarity testerThis resource is listed in dxzone.com under 1 categories. Its main category is Electronic and radio theory (Electronic & Radio Theory). "A quick polarity tester" is listed in our web site index since Saturday Nov 2 2013 and till now received a total of 129 hits.
- Technical Reference/Electronics - Electronic & Radio Theory
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