The AT-5555N II service menu contains roughly 60 to 80 adjustable parameters (depending on firmware version). Here are the most commonly accessed ones for calibration and optimization.
If this method does not work on your specific firmware version, variations exist. Some models require holding the and MENU buttons simultaneously while powering on. Once entered, the radio will usually display a single letter or a code representing the parameter you are adjusting. anytone at-5555n ii service menu
For most firmware versions of the AT-5555N II, the procedure is as follows: The AT-5555N II service menu contains roughly 60
Fine-tunes the Beat Frequency Oscillator to correct frequency "off-center" issues. Important Warnings Some models require holding the and MENU buttons
There are generally two levels of hidden menus on the AT-5555N II platform. The first is the standard User Menu (Menu + Power On), and the second is the actual Service/Alignment Menu.