About Radio

This page contains an archive of all entries posted to Gadget Freak in the Radio category. They are listed from oldest to newest.

Power circuits is the previous category.

Resource is the next category.

Many more can be found on the main index page or by looking through the archives.

Sponsored by Digi-Key

Gadget Freak is brought to you in association with Digi-Key.
Sign up for the fortnightly Circuits eNewsletter. Get design ideas and circuit schematics straight to your email inbox, no fuss. Just tick the option for Circuits.

RSS Subscribe to this blog's feed
[What is this?]
ElectronicsNews on Twitter Follow ElectronicsNews

Recent Comments

Jon on Tesla musica electronica: hey that is pretty cool, you should reco
Stuart Wall on Electronic spot-welding device for modelling: Where would we go to purchase this devic
Glen Graham on How did we manage before the headlight alarm?: As regards the above comments, the vehic
Ray Earley on How did we manage before the headlight alarm?: I'm missing something on the simple solu
Alun Williams - Electronics Weekly.com on A DIY LED (SiC): I like it, Erich. I wonder how many othe
EW on A DIY LED (SiC): I made a light emitting diode back in th
Climatarians green community on Solar powered trikes - Green is the new Black: Such innovations truly need to be commen
John Bebb on Theremin music to our ears: Dear Sir / Madam - your hyperlink "there
Alun Williams - Electronics Weekly.com on Hacking your own Motorola DROID dock: The point, I feel, Chris, is not that it
Chris on Hacking your own Motorola DROID dock: Boring. And old news. Either way, you

Archives

Latest News from EW.com

Main

Radio Archives

July 25, 2007

Hans knows the truth is out there

You never know what radio signals you might pick up if you just stop and listen. That’s why Hans built a simple and tiny receiver capable of detecting QRSS (extreme slow speed continuous wave) transmissions on a fixed frequency, such as 10.14MHz. The device is powered by a computer's USB port and the audio output feeds into the PC’s sound card and it can hook straight into a laptop for top secret missions. Hans used a toroidal transformer as matching and input filter, connected directly to a 30m (10MHz) dipole antenna and a useful oscillator/mixer IC as a crystal oscillator and mixer.

Please click on the 'continue reading' link below for complete build instructions and parts list.

hans2.JPG

Continue reading "Hans knows the truth is out there" »

January 13, 2010

Head-mounted video system runs on Linux

Linux augmented reality headware.jpg
This one caught my eye recently. Call it what you will - telepresence, augmented reality or head-mounted computing - this headset with connected video source is a home-brewed Linux-based system.

Thanks to Engadget (and Hack A Day) for flagging this one, and kudos to one Pascal Brisset for building the device.

Continue reading "Head-mounted video system runs on Linux" »