Transmitting Radar Signals
NOTE: As a safety feature, the radar enters standby mode after it warms up. This gives you an opportunity to
verify the area around the radar is clear before beginning radar transmission.
1 With the chartplotter off, connect your radar as described in the radar installation instructions.
2 Turn on the chartplotter.
If necessary, the radar warms up and a countdown alerts you when the radar is ready.
3 Select Radar.
4 Select a radar mode.
A countdown message appears while the radar is starting up.
5 Select Options > Transmit Radar.
Stopping the Transmission of Radar Signals
From a radar screen, select Options > Radar To Standby.
TIP: Press > Radar To Standby from any screen to quickly stop radar transmission.
Setting Up the Timed Transmit Mode
To help conserve power, you can set up time intervals in which the radar will transmit and not transmit (standby)
signal transmissions.
NOTE: This feature is not available in dual radar modes.
1 From a radar screen, select Options > Radar Options > Timed Transmit.
2 Select Timed Transmit to enable the option.
3 Select Stdby Time, enter the time interval between radar signal transmissions, and select Done.
4 Select Transmit Time, enter the duration of each radar signal transmission, and select Done.
Enabling and Adjusting a Radar No Transmit Zone
You can indicate areas within which the radar scanner does not transmit signals.
NOTE: GMR Fantom and xHD2 radar models support two no-transmit zones. Most other GMR radar models
support one no-transmit zone. GMR 18 HD+ radar models do not support no-transmit zones.
1 From a radar screen, select Options > Radar Setup > Installation > No Transmit Zone.
The no-transmit zone is indicated by a shaded area on the radar screen.
2 Select Angle 1, and select the new location for the first angle.
3 Select Angle 2, and select the new location for the second angle.
4 Select Done.
5 If necessary, repeat for the second zone.
Adjusting the Radar Range
The range of the radar signal indicates the length of the pulsed signal transmitted and received by the radar. As
the range increases, the radar transmits longer pulses in order to reach distant targets. Closer targets,
especially rain and waves, also reflect the longer pulses, which can add noise to the Radar screen. Viewing
information about longer-range targets can also decrease the amount of space available on the Radar screen
for viewing information about shorter-range targets.
• Select to decrease the range.
• Select to increase the range.
96 Radar
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