Heres a heads up to you tube nuts.If you subscribe to Netflix there is a great documentary by Ken Burns called Empire of the Air.It tells about Lee DeForest and Edwin Armstrong of triode and FM fame and the begining of tubes.It's one of those that you can watch on your computer anytime.Another goodie was Master of Lightining,the story of Niclo Tesla,that one you have to order....better than porn....Mark Korda
