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Yes, these are slide rules, a round one and a straight one. Before computers, this was how engineers computed. And before that, they used logarithms which, as it happens, are the basis for slide rules and, later, some of the … Continue reading
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I’m shifting to an Android tablet, the Insignia Flex (NS-13T001) from Best Buy for $249 and tax. They hit the stores this past Saturday and I grabbed mine shortly after they opened on Monday. While it is less capable than … Continue reading
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… but there are no one-time pads nor any mention of them at the National Cryptologic Museum? Provided with equipment, space and operating expenses by the National Security Agency (NSA), the museum is immediately next to NSA’s headquarters in Ft … Continue reading
In the previous sections, we eavesdropped on a live conversation between two ham stations, one in Windsor Ontario and the other in Venezuela on the northern coast of South America. And I mentioned that while you’ll find hams of all … Continue reading
In the first part of this post, we had a quick look at a conversation taking place between ham radio stations in Ontario Canada and Venezuela where I just happened to be in the right place, Phoenix Arizona, to “hear” … Continue reading
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I’m running my ham radio that uses the computer to do a lot of the work. Here’s a quick run down on what you see. First, notice there are four windows including a big, multi-section one in the upper left, … Continue reading
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Curiosity, the biggest, heaviest and most complex rover, landed successfully on Mars this evening. To the scientists, engineers, managers, directors, vice presidential types, to the security guard at the front gate of JPL in Pasadena, the lady in HR that … Continue reading
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The 12V light bulbs on the underside of our kitchen cabinets drop (go dark) like a nest of wasps hit with Raid Wasp and Hornet spray — bunches of them drop all at once. Is it a voltage surge? Is … Continue reading
While there are several ASCII to Morse code translators out there, I haven’t seen the encoding used herein. It is slightly denser than most and should work nicely in machines with a tight memory constraint. The basic translation represents each … Continue reading