USB serial + serial communication over RF

[system]

FYI
The radios i now have in my possession :

• Receiver: http://www.aurelwireless.com/wireless/uk/product_info.asp?id=2&modulation=434%20MHz%20AM%20OOK&comp=A&tip_UK=Receiver
• Transmitter: http://www.aurelwireless.com/wireless/uk/product_info.asp?id=9&modulation=434%20MHz%20AM%20OOK&comp=&tip_UK=Transmitter