This has been discussed ad infinitum here many times before. Try the search function. (Here's one.)

My $.02. Your infinitely better off with a $10 AM/FM radio. Major AM radio stations cover most of the country and have much more reliable reception.

(And I happen to own most of the popular wind up radios, as I collect radios period. They all have dismal shortwave performance, but even if they didn't, you want local information during an emergency, not the English language service of Deutche Welle or the BBC, all of which you'll only be able to pick up at night.)