| Build your own Variable Frequency Oscillator (VFO) with a Raspberry Pi Pico! This compact project delivers a tunable signal up to 15 MHz, en...
Burkhard Kainka (226)
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| Dip meters were once essential for radio amateurs, but affordable oscilloscopes have pushed them aside. That’s a shame. Some tasks are still...
| Vintage Radio Equipment presents professional receivers and transmitters from 1940 to 1970 with stunning images and outstanding explanations...
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| People think audio amplifier ICs serve only their primary purpose, but how about creating a basic ramp generator using a simple Texas Instru...
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| While dismantling an old hard disk, the author came across a three-phase motor. It is extremely well mounted and smooth-running. This gave r...
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| On cars and motorcycles, the failure of one direction indicator lamp is signaled by the other light flashing faster. What is the circuit beh...
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| As a tool for use in Morse code practice sessions at his amateur radio club, the author built this simple IR transmitter/receiver design. Th...
| When taking measurements in ionization chambers and other radiation sensors, it's often essential to handle small currents in the picoamp to...
| A Vector Network Analyzer (VNA) measures the real and imaginary parts of a signal, which together can be represented as a vector on a Smith...
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| The Elektor book publication with the above title describes a set of Arduino-driven test and measurement instruments — from their principles...