How often should the memory battery in the AN/PSN-11 (GPS) be changed?

The recommended frequency for changing the memory battery in the AN/PSN-11 GPS unit is every year. This replacement schedule is crucial for ensuring that the device continues to function accurately and reliably. The memory battery supports the retention of essential data and settings when the unit is powered off, ensuring that users can access critical information without having to reconfigure the device every time it's used.

Regularly changing the battery once a year helps to prevent potential issues related to data loss or malfunction due to a drained battery, thereby maintaining operational readiness and effectiveness in the field. Maintaining this regular maintenance schedule is essential for ensuring the longevity and performance of the GPS unit in air defense operations.