What if the ground based radar "van" is on a mountain? Radar is Line Of Sight, as the signal needs to be able to return to the receiver.
I'm not for GV based radar, but at short ranges it would be nice to have icons <simulating Mark-1 eyeball reports>
Just FYI, the F-4 Phantom had 1960s based technology and could automagically track targets out to 50 miles. Supposedly the max range
was 200 miles, but who knows....maybe if you were tracking the Hindenburg
