The RF light on the antenna unit does not light up until I press a button. And only when I press buttons do the emitters light up. They seem consistent. (In the past, when I've had RF interference, the emitters only lighted with occasional button presses since the interference was preventing proper communication. But that is not the case in this scenario. Currently, the emitters light up with every button press.)
The RF ID was originally set to 9. It's now set to 1.