The broadcast digital transition today reminded me of all the old “portable” TV sets that were once the height of cool tech, and are now headed to the junk yard. (Don’t throw them away, find out where to recycle at Earth911.com.) I had a couple versions of these old mobile TVs. One was portable in the sense that you could move the six-inch-by-12-inch block from outlet to outlet or regularly feed it six C batteries. The other was small enough to hang around my neck and took some smaller form of battery. Neither got reception worth a damn.
An update to 
