To enter the service menu, follow these steps while the radio is : Press and hold the MENU and MODE buttons simultaneously. Turn the radio ON while continuing to hold those buttons. Release the buttons once the radio powers up.
Rotate the Channel Selector knob to scroll through the roughly 53 available menu items. anytone at5555n ii service menu work
Used for local oscillator and BFO alignment to fix "off-frequency" reception in USB/LSB modes. Fine Tuning Limits To enter the service menu, follow these steps
Static. Just static.
The most reliable method reported for the Version 2/N II model involves a specific button sequence during power-up: To enter the service menu