Radar Observer Unlimited (ROU) Practice Exam

Range scale controls how much of the radar display you show at once and how much detail you can see. When you pick a smaller range, you’re zooming in on a smaller area, so targets appear larger and more distinct against the range rings. That extra magnification lets you place targets on the plot with greater precision, which improves plotting accuracy for those targets. If you choose a larger range, you cover a wider area, but the echoes become smaller and the display shows less detail, making precise plotting harder. So the trade-off is clear: smaller scales give more detail but less area, while larger scales give more area but less detail.