Older hackers will remember that a crystal set radio receiver was often one of the first projects attempted. Times have changed, but there’s still something magical about gathering invisible… ...

This series of projects explore concepts of radio communications. We use LEDs to generate (very high frequency) radio waves and photo-resistors to take the place of radio antennas. These ideas are ...

Arducon is an Arduino based ARDF transmitter controller specifically designed for for conducting amateur radio direction finding and is now available via Kickstarter.

If you are looking for something you could build in one or two sittings, you might consider starting with a regenerative receiver. We’ve looked at them before and even have one that uses a LM386 ...

If you are interested in building your very own open source long-range remote control transmitter for your next project. You might be interested in a new ...