: Turning the radio off usually saves the current settings, though it is highly recommended to record original values before making any changes. Common Service Menu Parameters
If you’re unsure, find a local ham with an RF lab. One hour of guided calibration beats weeks of chasing mysterious problems. anytone at-5555n ii service menu
The service menu (sometimes called a hidden or engineering menu) provides low-level configuration and calibration options beyond the standard user programming screens. It’s used for manufacturing calibration, repairs, hardware diagnostics, and advanced feature enabling/disabling. Accessing it can change radio behavior in ways that affect safety, compliance, or legal operation. : Turning the radio off usually saves the
Once inside, the navigation logic changes from standard operation: or legal operation. Once inside