Wind Up Radios Add Comment If this is your first time visiting National Terror Alert you may want to subscribe to our RSS feed. The National terror Alert feed features breaking news, alerts and bulletins on demand and it's free of charge.. You will only see this message on your first visit to the site. Thanks for visiting!Wind up radios are available through a variety of sources however the quality in wind up radios varies. If you don’t have a radio that works during a power failure.. you’ll wish you had a Freeplay wind up radio. It’s the one we use and recommend.