It used to be homebrew ham gear meant something simple ... to high-speed digital signal processing, and advances in software-defined radio techniques. [Charlie Morris] decided to build an ...

It’s an SDR transceiver for HF which does all the work of quadrature splitting and mixing with homebrewed modules rather than the more usual technique of hiding it in an SDR chip. It’s a very ...

SDR, which has been developed by Navy along with BEL, is already fitted in surface ships. Device helps in carrying out signal ...

MTRI has successfully implemented a three-node software-defined radio (SDR) system that records 25 MHz of bandwidth continuously on each node for up to 120 seconds. The system is capable of ...

Learn More › In this digital age, where we rely on our phones for so much information, it’s easy to overlook the good old radio. But an emergency radio will keep you informed with news and weather ...

Imagine communicating off-grid without relying on cell towers or internet connections. Thanks to an innovative open-source ...

When you buy through our links, we may earn a commission. Learn more› By Nena Farrell and Dennis Burger Our Bluetooth radio pick, the Victrola Houston, was discontinued, so we removed it from ...

Radios are communication systems that send and/or receive electromagnetic waves. Devices such as citizens’ band (CB) radios, walkie-talkies, and handie-talkies are two-way radios that can be used for ...

The exchange on that day led to post-quake relief efforts, friendship between the two men and a network of volunteer ham radio operators to support disaster-hit areas. Nishiyama started checking ...

After 52 years of designing and manufacturing ham radio parts and products, Martin Jue has shuttered his Starkville business, ...

The value of the U.S. dollar in terms of the SDR is the reciprocal of the sum of the dollar values, based on market exchange rates, of specified quantities of the SDR basket currencies. See SDR ...