About GPS Week Number Rollover For Equipment

GPS week number rollover ＊1 for equipment is to occur on some of GPS' on 8th September 2024 or 3rd August 2025.

The subject models are designed to turn the clock back 19.6 years (23th January 2005), and will continue to work incorrectly under normal use, however there is no influence on positioning operation.

Following abnormalities may occur in some equipment.

Some date information will be displayed erroneous.

Communication function will not work properly.

Objective Equipment

1.Rollover date: 8th September 2024

• Inmarsat Fleet Broadband FB500（JUE-500）
•    GPS navigator（JLR-7500/7600）
•    GPS receiver（JLR-4331W/4340）
•    GPS compass（JLR-20/30）

2.Rollover date: 3rd August 2025

• AIS（JHS-182/183）
• GPS navigator（JLR-7800/7900）
• GPS receiver（JLR-4341）
• GPS compass（JLR-21/31）