Hi Wardner: I've seen various old pieces of electrical test equipment back then myself. A simple square wave generator would test a coil. The output from a set of mechanical points is a simple square wave. A tester only needs a square wave at a very low frequency to equal what might be needed for a coil on a gas tractor engine. That low frequency could give off a growling noise if electrical parts are mounted in a hardwood box as some of the very old test equipment was. I'll bet most on this forum never saw a hand crank phone. When getting an incomming call from an old weak person who could not crank fast enough, our phone would emit a low growling noise... Maybe something like what you are talking about. The hardwood box acted as a great speaker. By the way, Some of the guys would use these old hand crank phones to shock wet ground to help bring night crawlers to the surface. Farm boys ain't dumb when it's time to go fishing... ag ret.
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Today's Featured Article - Bad Vibes - by Curtis Von Fange. One of the strangest ways to communicate with our tractor is to ask it how it feels. "Ask it how it feels," you say? Yup, ask it how it feels. Now, as with the other articles in this series one has to be able to hear what 'ole blue' is trying to say in response. The nice thing about our old iron friends is that they are usually quite consistent in their response, rather unlike some people I know who might change what they say due to the weather or other mitigating circumstances. But since t
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