It was communicating with the RF Receiver/Extender....but I then had a blaster going to an IR receiver which in-turn sent signals to my equipment closet. That set-up was from "back in the day" when I only had IR talking. I think I was too lazy to switch the whole thing around when I got the RF extender for may Harmony. Remember the RF extender was a pricey add-on for the 1000 and the 1100. Anyway the bottom line is now that I moved the RF extender into the equipment closet and put the blasters directly from it to the equipment (HR-44) everything is fine.
Ahhh, gotcha. The RF Extender is an option for the 1000 and 1100? wow! It's included with the 900.