Garmin GXM 30A - Manual (Page 36)

 GXM 30A XM Radio Smart Antenna Owner’s Manual
Feature
Data Broadcast
Frequency
NEXRAD Radar 5 mins
Satellite Mosaic 15 mins
Storm Cells 1.25 mins
Lightning 5 mins
Surface Winds 12 mins
Surface Pressure 12 mins
Hurricane Track 12 mins
Visibility Forecast 12 mins
Fronts 12 mins
Water Temperature 12 mins
Wave Height 12 mins
Wave Period 12 mins
Wave Direction 12 mins
Feature
Data Broadcast
Frequency
Buoy Reports 12 mins
City Forecast 12 mins
County Warnings 5 mins
Marine Warnings 20 mins
METAR 12 mins
AIRMET 12 mins
SIGMET 12 mins
Echo Tops 7.5 mins
Winds Aloft 12 mins
TFR 12 mins
TAF 12 mins
Freezing Level 12 mins
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Feature Broadcast Rates