: The service menu contains alignment settings specific to your individual unit. Write down all original values
Which would you prefer?
If you have access to like a dummy load or frequency counter?
The service menu, also known as the engineering menu or calibration menu, is a hidden menu in the Anytone AT-5555N II that provides access to advanced settings, calibration options, and diagnostic tools. This menu is designed for authorized service technicians, advanced users, and manufacturers to fine-tune the device, troubleshoot issues, and perform repairs. The service menu allows users to customize and optimize their AT-5555N II to meet specific needs, such as adjusting frequency ranges, modifying audio settings, and configuring advanced features.
If you suspect you made a mistake mid-way through adjusting a value and have not saved it, simply switch the radio off via the power knob before pressing any confirmation keys to discard the changes.