Garmin 190-01098-00 User Manual

Appendix

The radio may generate the following alarms or system messages.

If the radio detects a voltage greater than 15.8 Vdc or less than 10 Vdc, “HIGH VOLTAGE” 

or “LOW VOLTAGE” is displayed on the screen. Check the wiring if any of these 

conditions occur.

When the primary VHF 300 series radio unit is being used, “MAIN IN USE” is displayed 

on the screen of all remote Garmin GHS series handsets. The screen returns to normal three 

seconds after the last input on the primary station.
Remote handset stations cannot interrupt the primary radio unit. However, remote handset 

stations can interrupt the operation of other handset stations.

If you set the WX alarm and an incoming weather alert is detected, the radio automatically 

tunes to the WX channel that is broadcasting the alert. See 

weather alerts.

When GPS data from a NMEA network or position data you entered manually is over four 

hours old, the alarm tone beeps and “DATA IS OVER 4 HOURS OLD” is displayed on the 

screen.

Select 

 to disregard the alarm and to turn off the alarm beeping. When you take 

no action after three minutes, 

 is selected automatically.

Select 

 for more information on manually 

entering position data.

When GPS data from a NMEA network or position data you entered manually is over 23.5 

hours old, “DATA IS INVALID” is displayed on the screen. The radio will not transmit 

position data that is more than 23.5 hours old.

Select 

 to discard the old position data. The screen displays “NO GPS INFO” 

on the Home screen. When you take no action after three minutes, 

 is selected 

automatically.

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