Hi Ashwin

 

If you're looking for decent info on radio modules.  They do rx, tx and rx/tx with or without encoding.  If you do not find what you're looking for, then it does not exist but they will design it for you.  We have used many of their modules especially transceivers in the past and it's well priced and quality.  They also have transceiver sets with pics doing the encoding/decoding of which they will supply the source code.

http://www.aurel.it/wire/Uk/homepage_uk.htm

 

regards

martin