I didn't see your post here. This is what I posted at the other forum. Hope this helps.
I have a harmony 900 remote and did set up the RF system which they call the IR Blaster. I don't think it works 100' away. Mine seems more like about 25'. While it does IR, it isn't X Device compatible like the older Harmony 890 (which also doesn't go 100'). It's only compatible with the IR blaster as best I can tell You can only control IR compatible items with the IR blaster. You can hook up to 5 IR blasters to each remote and one IR blaster has 2 IR extensions which is good if your components are separate. Unless they get the distance greater, it’s probably best to save $100 and get the Harmony 1.
XPA-2, XPA-5, ERD 1, ERM 6.3 UMC-1, Bose 901s (wife won't let them go) many componets to remain nameless to keep all of you from hurting yourselves laughing or thinking you are in a time warp.