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Section 3
NEXRAD Operation
Section 3: NEXRAD Operation
Requesting NEXRAD Data
NEXRAD data can be requested from the Data Link Page or the Map Page.
To request NEXRAD data from the Data Link Page:
1. Select the Data Link Page from the AUX Page Group.
2. Press
CRSR. ‘NexRAD REQUEST’ is highlighted.
3. Press ENT. The NEXRAD REQUEST Page (see page 15) is displayed containing the following fields:
Center — this field allows you to specify reference points for the request. Up to five reference points
are available:
• Current Position — Request NEXRAD data from your current position.
• Look Ahead — Request NEXRAD data ahead of (along) your current route.
• From ID — Request NEXRAD data from a specific waypoint identifier. If ‘From ID’ is selected
for the reference point for the request, the ‘WPT’ field is displayed. This field is used to enter a
waypoint identifier as the reference point for the request.
• From Lat/Lon — Request NEXRAD data from a specific latitude and longitude. This is only select-
able when requesting from the map. The ‘Position’ field displays the position of the map cursor and
cannot be edited.
• From Flight Plan — Request NEXRAD data from one of the waypoints on the active flight plan. This
is only selectable when an active ‘Flight Plan’ has been selected. The ‘Flight Plan’ field is used to
select which waypoint in your active flight plan to use as the reference point for the request.
Radius — This field selects a request radius from 50 to 250 nautical miles from the selected position.
Position — ‘Current Posn’-Position is current, ‘Look Ahead’-Position is look ahead position, and ‘From
Lat/Lon’-Position is Map Cursor position.
Auto Request (GDL 49 Only) — This field is used to set the time interval for the GDL 49 to
automatically send a NEXRAD data request. The time options are OFF, 10 min, 15 min, 20 min, 30
min, 45 min, and 1 hour. When an auto request time is selected, the first request will be sent after the
specified time has elapsed from when the field was set (as opposed to immediately sending a request).
Data Link Page for GDL 49 (500 Series).
Data Link Page for GDL 69 (400 Series).
