He has managed to implement a software-defined SSB ham radio transceiver for the HF bands ... by making slight frequency changes to a Si5351 clock generator using 800kbit/s I2C, and controlling ...

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 ...

(Douglas H Stutz/ U.S. Navy) When a group of Navy engineers and software developers took time away from their day jobs in December, they spent the time pursuing a task long considered passe: they ...