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 ...

"After a few years installing and working with liquid-cooled transmitters, my feelings about them are mixed," writes.

Scientists have taken advantage of graphene's special properties -- its mechanical strength and electrical conduction -- and created a nano-mechanical system that can create FM signals, in effect the ...

Ever since a young Henrich Hertz began constructing the scores of electrochemical cells needed to power the world’s first radio transmitter in the 1880s, designers have sought out better and more ...

Suppose you traveled back in time—say 40,000 years into the past—and then you got stuck. What would you do? How would you rebuild all the stuff that you like? That's the premise of the book How to ...

One of the great things about the Hackaday community is how quickly you find out what you don’t know. That’s not a bad thing, of course; after all, everyone is here to get smarter, right? So let’s ...

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.

Texas A&M Galveston's Capt. R.L. Thrailkill demonstrates a radar simulator with radar, ship controls and Loran-C which is used to teach plotting at the campus. “I'm an old salt, and I hate to see it ...

Voyager 1 remains humanity's furthest outpost, hurtling across interstellar space at 38,210 miles per hour. However, NASA lost communication with the beloved space probe on October 19. The space ...

US researchers have used graphene to create the world's smallest FM radio transmitter. "This work is significant in that it demonstrates an application of graphene that cannot be achieved using ...

The heart of every radio transmitter is a reliable oscillator. Creating small, and tunable, oscillators that can maintain a precise frequency when conditions like temperature, pressure or humidity ...