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Matthew LindseyAug 19, 2025
Why does my ICS Ranges display SIG on the status line?
- CChristina HarrisSep 12, 2025
If the status line on your ICS Ranges shows 'SIG,' indicating a signal fault, it might be due to NAVTEX stations transmitting carrier without modulation or local interference. If it appears briefly, it's usually not a concern. However, if it persists, investigate potential receiver errors or interference from nearby equipment. Try turning off devices like battery chargers one by one to identify the source of the interference.


