Area 50 is an integral part of www.techlib.com and features projects that may be unusually difficult to build, use unusual parts and materials, pose safety issues or potentially cause radio interference. In other words, all the fun stuff. Seriously, only the experienced hobbyist should attempt Area 50 projects and only with the full understanding that there are risks that require a significant understanding of electronics and electrical safety. Please read the disclaimer, too.
There actually is an Area 50. When my company moved years ago, the various boxes were numbered to indicate where they should be delivered. Our "vast" warehouse ended up with the number 50. There are treasures out there and, no doubt, alien technology.
Contact: charles@wenzel.com