here is a guide on how to make your own remote detonator (using radio): you will need, a brain, two hands, eyes and some stuff below a soldering iron. solder wire snippers wire strippers and pliers and yeh, dont forget to vote for me in the book contest... NOTE: I do not claim this as my own design, it was designed by a colleague of mine and all the reproduction rights remain his
http://www.instructables.com/id/Remote-Detonator-with-Radio/