The friend’s radio didn’t come with a frequency display, and buying the add-on would cost more than the radio did. So [Todd] has set out to build an Arduino frequency counter for a Kenwood TS ...

For some reason we can’t help but think this is like Captcha for radio enthusiasts. We have seen Hellschreiber used with AVR microcontrollers before, but this is the first Arduino implementation ...

Both of the freestanding modules (NS73MFM transmitter, Arduino UNO) can be mounted to a breadboard and interconnected. Refer to the hardware setup and proceed. The simple code generates digital tones ...

This sensitive FM radio tuner is the right circuit for hobbyists who want to build their own tuners instead of buying a “plug-n-play” finished product. The fm tuner circuit is designed with only 3 ...

So if you think Arduino HamShield is something you could benefit from, visit the Kickstarter website now to make a pledge from $98 and help the Arduino HamShield become a reality. Source: Kickstarter ...

Arducon is an Arduino based ARDF transmitter controller specifically designed for for conducting amateur radio direction finding and is now available via Kickstarter. The unique piece of kit has ...

A new kind of radio tuner that is extremely sensitive to faint signals could improve various applications, from radio telescope imagery to cell phone reception. Wayt Gibbs reports.