DTMF + radio frequency remote control

OK, question time, what are you going to do if you're not allowed to use digital wireless network for remote control?

Answer, use an analog one.

Here's the best I got so far..

A simple 4-ways switch using DTMF->BCD convertor

http://www.electronic-circuits-diagrams.com/remotecontrolsimages/remotecontrolsckt5.shtml

Another blog with a lot of information about RF DTMF control

http://radio-control-schematics.blogspot.com