Anytone At-5555n Ii — Service Menu

Performing a standard CPU reset (FUNC + SCAN at power on) will not restore service menu values to factory defaults.

Once inside, the navigation logic changes from standard operation:

Use a high-quality, regulated DC power supply to prevent noise and voltage spikes.

: Within that 2-second window, release MENU and MODE, then quickly press these buttons in order: RB, NB, SCAN, MEM, EMG anytone at-5555n ii service menu

Change the transceiver mode to the target band (e.g., AM or FM) via the switch.

Fine-tunes the percentage of AM modulation. Proper calibration ensures loud, clear audio without hitting heavy distortion or square-waving your signal. Best Practices for Troubleshooting and Tuning

Note: exact key sequence may vary by firmware version. If these don’t work, consult the official service manual or firmware release notes. Performing a standard CPU reset (FUNC + SCAN

For those needing to recover a severely misaligned radio, some users suggest using PC-based alignment software (such as the ) which may allow for reading and saving calibration files.

: Before you change a single number, you MUST write down every original setting. Without these records, you will not be able to restore the radio to its factory state.

It's essential to exercise caution when navigating the service menu, as incorrect settings can affect the performance and functionality of the radio. Make sure to consult the user manual or seek guidance from a qualified technician if you're unsure about making changes. Fine-tunes the percentage of AM modulation

Before changing a single number, scroll through the entire service menu and write down every parameter name and its factory default value. If you make a mistake, you can manually revert it.

: Press and hold both the FUNC and SCAN buttons simultaneously on the front panel. Power On : While holding those buttons, turn the radio on. Release : Release the buttons once the LCD display changes.