AM radios are relatively simple devices, and building one is a good way to start exploring the world of radio communications. [GreatScott] does exactly this in the video after the break, building both ...

This simple circuit consists of a transmitter/receiver pair and functions as an automobile anti-theft alert system. The premise for the design is straightforward. You place the transmitter in a ...

We’ve frequently talked about amateur radio on these pages, both in terms of the breadth of the hobby and the surprisingly low barrier to entry. It’s certainly the case that amateur radio does not ...

For good reception, a radio must have good selectivity (selectivity is a radio's ability to separate weak stations and strong stations on the FM dial) and good sensitivity (the ability to receive weak ...

For the first time, researchers have used a laser as a radio transmitter and receiver, paving the way for towards ultra-high-speed Wi-Fi and new types of hybrid electronic-photonic devices. You've ...

German manufacturers Plisch and RFmondial have produced a VHF Band III DRM transmitter, which the companies said is the first ...

Seco-Larm’s ENFORCER 917MHz HL-951 series RF transmitters and receivers use digital modulation for improved immunity to interference, better signal penetration in environments with heavy obstructions, ...

Joshua R. Smith receives funding from the National Science Foundation, the National Institutes of Health, the Department of Energy, the Department of Defense Medical Command, DARPA, Bosch, and Amazon.