Simple Ham Radio Antennas

TVTechnology: Low-Level RF Signals Allow Hackers to Grab Data From Laptops : "Low-Level RF Signals Allow Hackers to Grab Data From Laptops. No Wi-Fi required. As anyone who has tried to use a portable AM or shortwave radio near a computer knows, computers emit a variety of RF signals over a wide range of frequencies. The emissions can extend into the VHF bands. Although these emissions are considered noise or interference, the reality is they contain information about what's happening inside the computer. Researchers at the George Institute of Technology are studying these emissions to help hardware and software designers develop strategies to plug these RF data leaks. Alenka Zajic, an assistant professor in Georgia Tech’s School of Electrical and Computer Engineering, explains, “People are focused on security for the Internet and on the wireless communication side, but we are concerned with what can be learned from your computer without it intentionally sending anything