Elektor published a matchbox radio project that pushed the limits of miniaturization. It was a compact, fully functional AM ...

New battery-free technology to power electronic devices using ambient radiofrequency signals. ScienceDaily . Retrieved July 12, 2025 from www.sciencedaily.com / releases / 2024 / 07 / 240725154834.htm ...

Even if they remain active, streaming services can be costly (not free like AM radio), require prior registration, depend on utility power and are not required by the Federal Communications ...

Solar panels and home batteries have soared in popularity because they allow consumers to generate and store their own carbon-free power and save on their electricity bills.