U.S. Air Force Staff Sgt. Corey Johnson, Tactical Air Control Party member, communicates with French air force aviators during a tactical exercise Feb. 24, 2016, in Djibouti. Although aviators across ...

Engineers with the University of Wisconsin-Madison have come up with a novel way to boost the size of high-frequency antennas needed to transmit military communications across great distances: Turn ...

When temps start to rise, and everyone wants to have fun in the sun, owning a boat can be a great way to cool off and enjoy an adventure with family and friends. You can get a great deal, especially ...

The familiar real estate adage “location, location, location” rings true these days for huge tracts on the outskirts of major cities — sites that for decades housed AM radio towers but that today ...

The 185-foot masts and flattop antenna dwarf the transmitter building at the “new” 1931 WHK transmitting plant. Ever since Marconi began playing with radio at his family villa, there have been many ...

Let’s start off with proof. Below is an animation of a measurement of airplanes and meteors I made using a radar system that I built with a few simple easily available pieces of hardware: two $8 RTL ...

This is the second in a series of articles about FM transmission systems. The first appeared Oct. 9. How many bays do I need in my antenna and how much transmitter power do I need? These questions ...

We think of radio navigation and direction finding as something fairly modern. However, it might surprise you that direction finding is nearly as old as radio itself. In 1888, Heinrich Hertz noted ...

For the first time in history, a prototype radio has been created that is claimed to be completely digital, generating high-frequency radio waves purely through the use of integrated circuits and a ...

This two-part article series reviews new developments in the Fourth Generation Long Term Evolution (4G-LTE) cellular standard. The series explores LTE-Advanced (LTE-A) Release-12 (Rel-12) features and ...

A simple fm radio transmitter circuit which covers frequencies from 88 to 108 MHz. It is built with 3 transistors: BC109, BFR91A and BFR96S. It is quite stable and the output power is around 200 mW.