Quote Originally Posted by cooksydesign
Only parameters I have at the moment are size, distance, and power requirements.

The size of the circuit board has to be about 1 inch tall and 1.5 wide. Powered by a 9 volt transistor battery through a 3.3 voltage regulator. Distance for transmitting data is less than 100 feet, probably closer to 50 feet.

I think thats all I have right now. I haven't started yet, just gathering info. Best place to start, other than Microchips' site, is here.

Thanks for all the responses.

B
I've had great luck with Lynx technologies modules for simplex operations. For 100 feet, most of the inexpensive modules,both AM or FM will work fine. I've been using the Chipcon CC1100 chip ICs for two way comms with great results but this is way overkill for your purposes (also a pain to solder!). For simple AM opps.,the Micrel transmit and receive chips are great.