Garmin GXM 30 Satellite Radio User Manual


 
17 GXM 30 XM Radio Smart Antenna Owner’s Manual
Water Temperature
The Water Temperature feature displays the water’s surface
temperature. The temperature breaks are indicated by isotherm
lines.
Wave Period
The Wave Period feature provides the time (in seconds)
between successive waves.
Water Temperature Wave Period
XM WEATHER FEATURES > WATER TEMPERATURE AND WAVE PERIOD