On May 16, 2008 at 11:48, AJF said...
Are they Dish Network sat receivers?
If so, they can be controlled using their RF remotes,
so I'd guess that the fan RF controllers are send a signal
that is also used by and conflicts with the sat receivers.
Same with Directv receivers, but that would not explain the light switch causing it.
Just blame sparky and be done with it.
