If you are underway in zero visibility and the error appears, there is a hack for older analog JRC radars:
: Ensure the scanner unit is receiving its dedicated AC or DC power (check fuses and breakers), as the display may be on while the scanner remains unpowered. Critical Safety Warning no sync signal jrc radar
regulations, especially for vessels over 3000 GT which are required to maintain active 9 GHz (X-band) and 3 GHz (S-band) systems for collision avoidance. If you are underway in zero visibility and