Generally asking about connect RC module

should hook to a RX pin on Arduino or connect to any pin, which one better?
Thanks
Adam

Not even close to being enough information for us to help you.

Read the forum guidelines for some hints on how to get the most from this forum.

Usually one does not connect anything to the RX pin (if the RX pin is the USB serial port). The RX and TX pins are used to upload code. Connecting a second device to the main hardware serial port can cause problems with code upload.

That said, what exact RC radio module are you talking about? What Arduino board?