Stu WØSTUOp Amps (E7G12)The 2020-2024 Extra License question pool wants to ensure you know a thing or two about operational amplifiers, an analog integrated...
Stu WØSTUPart 15 DevicesPart 15 of Title 47 of the Code of Federal Regulations regulates low power, unlicensed devices that can cause interference on the ham...
Stu WØSTUSpectrum Analyzer (E4A02)The spectrum analyzer provides a frequency domain view of signals, while an oscilloscope displays the time domain. Learn the difference.
Stu WØSTULiquid Crystal DisplaysEver wonder how that LCD on your radio works? Get the fundamentals on liquid crystal display functionality.