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In the 60's, when I built a short-wave radio from a kit (purchased at YouDoIt electronics) and it didn't work right away, Louis invited me in his lab at MIT to try and fix it.
He asked one of the student-engineers there to check it out. After testing the radio's different sub-circuts on an oscilliscope and several other meters I had never heard of, an over-heated transistor was located and replaced, and the far-out variety of short wave stations came it loud and clear.
It was fun to have a "modern" version the tube-based short-wave radio that we grew up with - which I believe to have been Louis's. I would listen for hours and hours to that set, imagining who was sending those signals (most often I would picture huge sea vessels), enjoying the variety of languages and sounds that huge-tubed, golden veneer-wood, lighted-dial radio would generate.
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