Anytone At-5555n Ii Service Menu -

While holding the PTT , rotate the Channel Selector to change the numerical value. Save & Exit: Turn the radio OFF to save your new settings. Common Known Settings

You should now see a new menu labeled or similar engineering screens instead of the normal channel frequency. anytone at-5555n ii service menu

Adjusting this can sometimes help with the "receive noise" common on these units. Frequency Alignment While holding the PTT , rotate the Channel

Used to lower AM dead key (e.g., to 2W) for driving external amplifiers. Modulation While holding the PTT

There is no "reset" for this specific menu; changes are permanent unless manually reversed.