The 60th annual Dayton Hamvention, a three-day amateur radio, computer and technology gathering is set this year for May 20-22, 2011, at the Dayton Hara Arena, 1001 Shiloh Springs Road, Dayton, OH 45415. Dozens of commercial radio and electronics vendors as well as numerous individual flea market vendors will be in attendance. While this is not a traditional hacker con, there has been a shift in recent years away from exclusively ham radio gear to items of interest to computer buffs, Makers and the open source community. For example, reps from 2600 Magazine attended the past few years. Tickets are available online.