The best possible score is 10.
No specific info about version 4.2. Please visit the main page of Radar Contact on Software Informer.
Radar Screensaver can turn your video display into a sky-watching radar screen.
It is a flight simulator that allows you to enjoy a realistic environment.
Traffic X is an add-on for users of Microsoft Flight Simulator FSX
Weather Radar includes local NEXRAD Radars, US Nat Radar and Seven Overlays
Advanced Simulated Radar Client is a truly advanced simulated radar client.