I want small practical circuits for RF transmitter -reciever that will be used in wireless controll of a robot

Question

I'm working on a robotics project. I want to control the robot wireless through sending/recieving signals from/ to the robot using RF transmitter/reciever circuits. So I need some practical examples for these circuits in a range not less than 30 meters. If there is any other simple mean to control the robot wireless please mention it

Answer 1

Here is a complete circuit:
http://home.att.net/~wzmicro/rf.html

The Holtek modules are still available, as are the Tx and Rx modules.

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Answer 2

Use a FM radio, and a FM microphone. Talk into the mic, and wired the output of the radio to your robot control input.

Answer 3

prevoius examples are not going to help for your application.
Start here
http://www.parallax.com/html_pages/products/communication/rf_modules.asp