After re-reading this I noticedThe internal osc will sometimes work and sometimes not. To be safe use an external osc. The ones with three pins have built in caps and prove to be stable.I tried my program directly from pic to pic and it works fine, the problem is when i add these 2 modules then it doesn't work. I am using the 12F683 with a 4 MHZ internal osc.
At some point you will need a protocol like dhouston mentioned. Here is a link that has a lot of good reading http://www.linxtechnologies.com/Supp...ication-Notes/
App notes AN-00160 an AN-00232 might be of interest.
But...for sending one or two characters of data you should be "OK" if there is not out side interference. I send numbers like 11, 12, 13 or strings "HI" and so on with out using any protocol and works fine.
Try changing the osc and look at dhoustons link, good example.





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