Re: DIY dummy load, not qrp kit - warning #dummy

David G4DMG

Somewhat off topic, but when I was in Seconday School in the 1950s I worked on the stage lighting switchboard.
The "dimmers" were vertical circular pipes filled with water and ?? and a piston was raised or lowered into the water by a rope and pulley system.  It was hard work winding them up and down.


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