I thought of that. In the RF setup you can assign the Listen page to a MRF350....but not more than one. The buttons the macros are assigned to are on the listen page. This might be part of the problem. But even then, the receivers are connected to different ports on the MRFs. Basement AVR is on port 1, upstairs AVR is on port 4. So the crosstalk shouldnt happen if it was simply sending the commands to the wrong base....since it would still come out the same port....make sense?