Garmin GXM 40 - Manual (Page 35)

GXM 40 Owner’s Manual 
Appendix
Feature
Data Broadcast
Frequency
NEXRAD Radar 5 min.
Satellite Mosaic 15 min.
Storm Cells 1.25 min.
Lightning 5 min.
Surface Winds 12 min.
Surface Pressure 12 min.
Hurricane Track 12 min.
Visibility Forecast 12 min.
Fronts 12 min.
Water Temperature 12 min.
Wave Height 12 min.
Wave Period 12 min.
Wave Direction 12 min.
Feature
Data Broadcast
Frequency
Buoy Reports 12 min.
City Forecast 12 min.
County Warnings 5 min.
Marine Warnings 20 min.
METAR 12 min.
AIRMET 12 min.
SIGMET 12 min.
Echo Tops 7.5 min.
Winds Aloft 12 min.
TFR 12 min.
TAF 12 min.
Freezing Level 12 min.
Feature Broadcast Rates