The service menu allows for deep internal alignment and calibration. Because there is no factory reset for these settings, it is vital to record every original value before making changes. 🛠️ Accessing the Service Menu To enter the service menu, follow these steps exactly: Ensure the radio is OFF .
: Controls the local oscillator offset. Adjust this first if the radio is off-frequency on USB or LSB. anytone at-5555n ii service menu
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If a radio is off-frequency or underperforming, a professional radio shop with the correct calibration tools can ensure the device is set to peak performance safely and legally. The service menu allows for deep internal alignment