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A "No Sync Signal" on a JRC radar is a high-priority fault that compromises vessel safety. While it is often caused by simple cable corrosion, it can also signal a terminal failure of the transceiver or motor. Regular maintenance of external cables and monitoring the system's "Transmit" hours can help prevent these sudden failures during critical navigation.
Remember: In zero-visibility navigation, a radar with "No Sync Signal" is useless. Treat this alarm as an emergency and troubleshoot immediately.
To understand “No Sync Signal,” you must first understand the radar’s pulse. Every rotating antenna generates a (the sync signal) that tells the display: “I am now pointing at 0° (bow). Start drawing.”
Expect service costs to range from $800 to $2,500 depending on whether the cable, trigger board, or entire scanner power supply needs replacement.
