How can I convert IR signal in Rc5 protocol to RF?

Hi, You don't need to convert it at all. Simply take a proper TSOP IR detector and connect the output to a RF radio module data input. On the receiving side simply take the RF data output and use a NE555 to generate a squarewave at 38KHz which you switch on and off with your RF data output from the RF module. The NE555 can than control an MOSFET to control a IR LED with your data on/off.

Hi
Thank you PaulHolland

In the transmitter I send the signal with transistor ss9018.
In the receiver I process and amplify the signal with 4049.

But the signal shape changes so that the (PIC) receiver didn't response.
please help me ...

Thank you

Put an inverter after you signal before your PIC maybe you changed the polarity !.

Hello

I do that, but it didn't work,I think I have a problem in my receiver that distort the signal.
so is anyone know how to build RF digital data receiver 433 Mhz low noise.

Thank you.
"Sorry my english is not good."