Excerpted from Digital Receiver Handbook: Basics of Software Radio Sixth Edition, this series of articles from Pentek shows how digital receivers, the fundamental building block for software radio, ...

A crystal radio is basically a high Q resonator tied to an antenna and an envelope detector. These days the envelope detector is a point contact diode such as a 1N34 Germanium diode. The resonant ...

Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio salesman, and as a record producer. Steve reviewed audio products for CNET and worked as a freelance writer for ...

As I browsed the Exhibit Hall and lingered outside professional development sessions at APCO 2013, I found a consistent theme in the conversations I overheard and those I entered myself. Most ...

Amateur radio is the only hobby that offers its licensed operators the chance to legally design, build, and operate high power radio transceivers connected to unlimited antenna arrays for the purpose ...

Back before cell phones … before video games … before television … even before electric radios, there were crystal radio receivers. In the early 1920s and 1930s, magazines offered instructions on how ...

The world’s first all-optical radio runs on laser light, not electricity, opening new possibilities for stealth sensors and satellite applications.

Researchers have made the world’s smallest radio receiver – built out of an assembly of atomic-scale defects in pink diamonds. Researchers from the Harvard John A. Paulson School of Engineering and ...