Well I don't know about having to wait 20 min that would make it less game and more work but as AngryGiant said That would be kick@$$ then having to power it coupled with the ware and tare on the probe/rover and the comsat sys for running that rover would add a level of depth that would induce wet dreams in even this fat old trucker. I mean this is Kerbian universe witch means they could have stumbled onto faster then light coms (or to be more real, on a way to bend space and send a radio trans mission within that bubble and then simply pick up that trans mission ) witch could allow for real time coms with any planet in the sys.