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Part Two: Section 2
XM Weather
XM WPT Pages
When a GDL 69 or GDL 69A is installed, two XM-
related pages are added to "airport" pages in the WPT
page group:
• Textual METAR Page. The Textual METAR
page shows the text of the most recent METAR
(Meteorological Aerodrome Report) that has
been received for an airport.
• TAF Page. The TAF page shows the text of the
most recent TAF (Terminal Aerodrome Fore-
cast) that has been received for an airport.
XM AUX Pages
When a GDL 69 or GDL 69A is installed, the fol-
lowing XM pages appear in the AUX group of pages:
• XM Audio Page (GDL 69A only). See Section 4
below for a description of this page.
• XM Information Page. This page contains
information that you will use when activat-
ing your XM satellite radio subscription. It
also reports the GDL 69/69A' s software version
number.
• XM Weather Timestamp Pages. This page
show timestamp data for the most recently
received XM weather data.
12
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Section 2: XM Weather
The XM Weather Function is capable of displaying
graphical weather information through the XM Satel-
lite Radio Service when activated in the optional instal-
lation of the GDL 69/69A. Next Generation Weather
Radar (NEXRAD), METARs symbols (METAR),
Lightning (LTNG), Cell Movement (CELL MOVE),
and Winds Aloft (WINDS) are displayed on the NAV
pages. The types of products available depend on the
subscription service with XM Satellite Radio.
Once you have activated an aviation weather ser-
vice from XM Satellite Radio, the 400W/500W series
unit can display the following aviation-related data:
• NEXRAD. An indication of the intensity
of weather radar echoes from the National
Weather Service' s network of NEXRAD (NEXt
generation RADar) sites can be shown on the
XM Weather Page and can optionally be over-
laid on the Map page. (Both these pages are in
the NAV page group.) Canadian Radar may also
be available.
• Radar Coverage. Whenever NEXRAD is
shown, a cross-hatch pattern indicates the limits
of NEXRAD radar coverage. The cross-hatched
area shows where NEXRAD information is
unavailable.
• Lightning (LTNG). When enabled, lightning
strikes and cells are shown as yellow "+"
signs. Lightning information indicates the
location of cloud-to-ground lightning strikes.
• Cell Movement (CELL MOVE). When
enabled, Cell Movement shows the storm
cells identified by the ground-based system.
The movement is depicted by an arrow. The
tip of the arrow represents where the cell is
expected to be in 10 minutes from the time
the cell location was determined.
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