Using Radar
Overlay Numbers—show or hide cruising, navigation, fishing, sailing, or fuel numbers.
Radar Setup—access advanced radar settings.
•Orientation—change the perspective of the radar display.
•Heading Line—show or hide a line in the direction of travel.
•Rings—show or hide the radar range rings.
•Look-AhdSpd—turn on to shift your current location toward the bottom of the screen as your speed increases. Enter your top speed for the best results.
•Timed Xmit—set and customize a transmit/standby cycle. Define the transmission time (Xmit Time) and standby time (Stdby Time) in minutes.
•Xtalk Reject (Crosstalk)—filter out interference caused by another radar operating in close proximity.
•Advanced—access advanced radar settings:
•FTC (Fast Time Constant)—reduce unwanted clutter caused by rain at a distance.
•Front of Boat—offset the front of the boat if you mount the radar at an angle.
•Antenna Size (GMR 404/406 only)—select your antenna size (4 foot or 6 foot).
•Motor Speed (GMR 404/406 only)—set the motor speed of your GMR 404/406 radar to Normal Speed or High Speed. High Speed increases the speed at which the antenna rotates, which increases the speed at which the screen updates.
Targeting on the Cruising ScreenUse the ROCKER (GPSMAP 4000 series) or touch the target location (GPSMAP 5000 series) to begin targeting. A green ring and a green line appear. The green ring corresponds with the range rings to help define the distance of an object from your location. The green line corresponds with the heading line to help define the bearing of an object from your location. As you move the ROCKER, you adjust the point where the green ring and green line intersect. This point indicates your target. As you move the target over objects on the radar, target options appear along the right side of the screen.
Heading line
Target (intersection)
Target options
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Cruising Screen - Targeting
