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guess I left myself open for all these replies. I never knew geeks had such a sense of humor. I am trying to improve my crappy fm transmitter, and I didn't know if it mattered what kind of metal is best for shielding ( tin, steel, aluminum) anyway, the radiation reply was the funniest, I can just see beevis and butthead trying to make a nuke in thier basement wrapped in aluminum foil for some reason. and by the way you can get sheets of lead from plumbing supply places . They use it to make shower pan liners
Aluminum should work fine. Just remember, you can't solder to it and you have to connect it to the negative or ground of your transmitter. I'd probably put some plastic wrap between the foil and the PC board to prevent shorts.
What do you mean geeks? My mom tells me I'm cool all the time.