Amateur radio enthusiast Ernest Neijenhuis has documented his experiments with creating an Arduino-controlled antenna tuner. A powerful servo is connected to the antenna rotation axis and can be easily controlled with the servo library. Over time Ernest proposes to have the Arduino monitor the SWR meter to create an automatic tuner system. For now, here is the tuner demonstration:
Although HAM radio and the Arduino development boards may seem like a world apart, many operators have found synergy between the two. In the meanwhile, follow Ernest's experiments and notes here. And we're on twitter, so follow us for news and product updates as well.
If this sort of project intrigues you and you're new to Arduino, the first step is a solid board for your projects - our Freetronics Eleven - the Arduino-Uno compatible with low-profile USB socket, onboard prototyping space and easy to view LEDs: