MAP and VFR GPS Navigator Operation
5-76 SkyView HDX Pilot’s User Guide – Revision B
• Data is not available for the area because there is no NEXRAD coverage in the locale. This
can be observed in the areas surrounding the US in Figure 175 above.
• Data blocks not received for an area due to radio signal obscuration, interference, or other
radio phenomena:
Figure 177 – Missing NEXAD Data Blocks
• Data has not yet been received for an area for which there is available coverage, due to the
time it takes for the ADS-B system to transmit information. For example, the following
figure depicts what the continental US would look like when higher resolution regional
NEXRAD weather information has been received, but the lower resolution continental US
(CONUS) NEXRAD imagery has not yet been received:
Figure 178 – Regional NEXRAD Only / No CONUS
In all of these cases, areas for which no data is available will depicted in purple by SkyView.
ADS-B Receiver Status / Data Age
A status data block in the lower left corner of the map page contains information about both
the ADS-B Receiver’s state as well as age of the weather data that was last received by the ADS-
B receiver. This block only appears on the Moving Map when the WEATHER Layer is currently
displayed.
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