GPSMAP 3205 Owner’s Manual 85
radar
usIng radar > understandIng radar
Before transmission begins, the message “Spinning Up” is shown while the radar
antenna reaches nominal rotation speed. After the message disappears, the radar
begins painting an image.
Understanding the Radar Display
The Radar Page shows a status bar along the top, user-congurable digital
navigation data down the right side, a Heading Line, and Range Rings. Soft keys
that allow quick access to radar functions and setting changes appear along the
bottom of the page.
Range
rings
Heading line
Zoom scale
Ring separation
Soft
keys
Using Range Rings
Use the Range Rings to quickly determine the distance to a target. The lower-
right corner of the screen contains two scales. The scale value represents the
distance from the center of the radar display to the outermost complete ring. The
top scale represents this value. The bottom scale represents the ring separation
or the distance between the Range Rings. Use the RANGE keys to zoom in or
out. The tick marks on the Range Rings are arranged with major tick marks at 30
degree increments and minor tick marks every ve degrees. The tick marks can
help in quickly determining the azimuth to a target.
12 nm
9 nm
3 nm
6 nm
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Heading Line
The Heading Line is shown from your current position along the path of your
current heading.
