Hi Charudatt,

You would have better results using a protocol similar to the RC5 example for RF since it's manchester type encoding. You don't want or need the 40kHz modulation routine like the one in the IR Chips project for RF.

The purpose of modulating IR data at 40kHz is because this is the pass-band frequency of the IR detector module used for the project.

Visit the RC5 tutorial link in my previous post. It's very simple to implement something similar for an RF link.