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Originally posted by tribewilder
There are little "stick on" range boosters that you can buy for around ten bucks that just stick to the inside of the battery cover.
They are not powered and look very similar to a printed circuit.
I have used one, and know they work better with than without, but I never did any real testing as to bar strength or anything like that. But for 10 bucks, you have nothing to lose...except for your 10 bucks of course.