I selected stock only because of possible historical accuracy. I believe this is the route it should take.
Then again, the radar is darn good in game. No interference from anything. No breakdowns that happened often. Perhaps #2 is better because it does limit your range or just beyond visual range. It is hard because you are limited to what you can do with the radar in game because other outside forces do not play against it. In short, this radar would work in a Raptor