RayTech Navigator User’s Guide

Determining Actual Radar Range

The actual maximum radar range is essentially line-of-sight, and is limited by the height of the scanner and the height of the target as shown below lists some range examples:

Radar Range

Antenna Height (m)

Target Height (m) Maximum Range (nm)

3

3

7.8

3

10

10.9

5

3

8.9

5

10

12.0

Note: The ranges shown in the table are theoretical maximum ranges. The radar horizon is greater than the optical horizon, but the radar can only detect targets if a large enough target is above the radar horizon.

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Raymarine Marine GPS System manual Determining Actual Radar Range