I am using the Futaba 2.4ghz, the aluminum skin will be 0.2mm in thickness. I agree to make an actual experiment with all sorts of electronic items and receiver packed inside an aluminum enclusure to see what weird things they might do, of course with the antena sticking outside.

I had once had the power switch, kill switch, tachometer, throttle servo and the CDI battery all mounted tightly on a sheet of aluminum which sit in front of the plane right below the engine and CDI, the receiver was mounted very close too. Everything ran normally for a few flights, then the engine started to quit regularly while the tachometer would show "91" intead of the "0" rpm when the engine was off. I couldn't figure out the problem. I suspected the alunumum sheet might be producing interference or the electronic items were packed too closely together. After I got rid of the aluminmum sheet and mounted all the things a little bit apart, then everything runs normally again.