I currently have an EchoLink link at 445.2, located in Cantonment. This is experimental and in a testing stage, but is up most of the time, and appears to be working. The call is KT4B/L. Output power is about 30 watts, and the antenna is just about 20 feet up.
I found this video via the Wire Rascals group on Facebook. Besides the interest for those who work in electronics, I think it provides some important insights both on where science has difficulties, and also how science overcomes those difficulties. Note that the presenter explains in a comment on the video that she mispronounces Ohm’s first name, Georg as George and realized it later.
The basic problem for scientific study is that people resist new things, sometimes based on what they assume are well-established facts. Small misunderstandings in one area can lead to greater misunderstandings in another. Scientists are people.
At the same time, the continuing processes of science are more likely to change views, simply because scientists are also looking for something new to establish themselves. Quite often, the resistance to the new ideas and the effort required to overcome that resistance result in refining and improving the basic idea.
Watch the video carefully to see how missing data can lead an experiment astray. Years later, Ohm’s Law is a basic element in thinking about electrical circuits. It’s hard to imagine that it was ever questioned. Unless, of course, we look at unknown data.
My brother, Robert Neufeld, amateur radio operator N3AU, who also has pretty much every commercial radio license and is a lifetime electronics hobbyist, is going to host a zoom technical discussion each Thursday night at 8 pm eastern time. He plans to have it run around an hour +/- depending on what questions people have.
You can email him at email@example.com if you’d like information about the meeting. The first session is tonight, March 25, 2021.