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Nuts & Volts Magazine

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Build A Continuity Tester


During a recent vacation, I challenged myself to come up with a design for a continuity tester that suits my particular testing requirements. Most of the time, I go straight for a microcontroller, but this time I decided to use only non-programmable components. I also decided to use only through hole components, to make soldering easier.

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RF Oscillators


Previously, we learned what makes an oscillator do what it does, and tried a simple low frequency example. Now, it's time to move up — in frequency — to the oscillators which make the signals that drive the ham's wireless world.

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Rohde & Schwarz


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Connected Cars Are Comming


Cars are already loaded with communications technology. AM, FM, and satellite radios are common, as is a GPS receiver for the navigation system. In the coming years, we’ll be seeing new wireless systems incorporated into every vehicle for improving safety and for aiding in the implementation of self-driving cars. Here’s an update on this communications technology.

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Thermal Management


While not strictly a ham radio topic, hams certainly have to deal with managing a surplus of heat. From an extra-hot quarter watt to getting hundreds of watts away from the business end of a linear amplifier running a “full gallon,” hot spots need attention! Let’s see about giving a few important ideas the third degree, including an easy experiment you can do on the bench.

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Analog Style LED Clock - Learn Charlieplexing

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