hcker2000,
there’s a related thread at http://www.arduino.cc/cgi-bin/yabb2/YaB … 812591/4#4.
Read what ‘novice’ wrote. He found an article that shows you can use the cheapie units (as others have stated in this thread at SFE).
"I found an article on on/off keying (OOK) to help you. It’s titled “Wireless Monitoring System” and regards a system very similar to your’s.
find at http://www.circuitcellar.com/library/pr … ti-167.pdf"
Have fun, and report back your results.