Wireless solution for 5,10 and 20 kilometer range

I need to put a system in a rocket which has a communication like with base station. The distance for the rocket in upwards direction is 5km for 1 rocket, 10 km in other rocket and in the last bigger rocket, its 20km.

Any idea about a possible wireless chips to be used? I have a 256kbps datalink requirement. Our project website is www.projectstratos.nl

Please reply. Thanks in advance.

Below may have the answer, the person seems to have the same problem. :roll_eyes:

http://arduino.cc/forum/index.php/topic,75439.0.html

That's me dude. You could have rather spent those minutes in answering the question.

Regards.