While it's theoretically possible to put multiple sites in one knob/zone position, the G5 will lock on to and hold on the strongest site while disabling the reception of the other, weaker sites. Now, if you were doing this with the intention of using the G5 while roaming among the programmed counties, then this programming convention may work. Even in that case though, the most sensible thing to do is to split sites and counties among multiple knob positions as Unication recommends, and switch as needed.