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Nuts & Volts Magazine

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Build A Continuity Tester

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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Check Out These Practical Arduino And Raspberry Pi Books!

RF Oscillators

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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Meet the

Rohde & Schwarz

Oscilloscopes

Meet The Rohde & Schwartz Oscilloscopes

The R&S®RTA4000 and R&S®RTM3000 scopes offer unrivaled signal integrity and the lowest noise in the industry featuring a 10-bit ADC, 10x the memory and a 10.1" high-resolution capacitive touchscreen.

Get a FREE 3 GHz R&S®FPC1000 Spectrum Analyzer with the purchase of select scopes 350 MHz or higher.

View Specs & Applications

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Connected Cars Are Comming

CONNECTED CARS ARE COMING

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

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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Teledyne/LeCroy - 100 MHz-1 GHz Oscilloscopes - Biggest Touch. Best Value.

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Analog Style LED Clock - Learn Charlieplexing

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