Martin Lorton] has a vintage Harmon 4200B selective voltmeter that needed repair. He picked it up on eBay, and he knew it wasn’t working, but it was in good condition, especially for the ...

The PeakTech P1073 is a €25 smart multimeter with functions like True RMS voltage, current, resistance, capacitance, ...

Explore the world of RF directional couplers and their role in precise microwave measurements for engineers and designers.