Jasonejc, I have the same type of fans that you do, 6 of them, all RF, and would love to integrate them with my Vera install.
^^^ this, is the same guts as 99% of the “wireless” ceiling fans sold in the US, I’ve ripped several apart… Same 4 dip switches, with 16 possible combinations, all transmitting on the same frequency (433 mhz I think?)… and they use the same circuits in wireless gas/electric fireplace controllers as well.
I’ve gone down the same mental road you have… it’s all RF, if I could -learn- the codes, then I should be able to transmit them with something else. Ideally, you’d have a plug-in module that listened to Z-wave and spoke RF to the fans/lights.
If you check Alibaba, there are several “universal” remotes available that give more clues… (This product is no longer available.) – both the frequencies and standards used.
I have all the pieces, just none of the knowledge necessary to turn the pieces into a working product… but hopefully someone will… so I can buy one! 