Using 2.4Ghz+ Receiver and Transmitter

I was wondering if you could use a 2.4Ghz (or greater) FM Transmitter and Receiver for the Arduino Uno. I need to send one line of data at a time for communication over a longish distance (around 2km+). Also will you need any other equipment of could you just hook up the TX/RX Pins straight to it?

Thanks any help on this would be appreciated :slight_smile: