Chris,

The foil works as a screen because it is a conductor. If you found a non conducting foil it would screen the Rx.

What you could do is stick some kind of tape over the foil on both sides to insulate it.

Better idea is to try and kill the interference without the foil. I have a JR700 Rx sitting next to an ESC (only place I could find) and it works OK.

If you stay with the foil watch out for any effect it may have on range. I know the antenna is outside the screen, but if the screen is blocking interfernce affecting the Rx it must also be screening some signal too.

Good luck


Terry