: Connect a reliable dummy load and an inline watt/modulation meter to get accurate, safe readings while testing. How to Access the Service Menu
Ensure you are using the correct exit sequence (usually holding the FUNC key). If the radio power cycles abruptly due to a loose DC power connection, the EEPROM will reject the changes and revert to the last saved state. anytone at5555n ii service menu work
: Connect a reliable dummy load and an inline watt/modulation meter to get accurate, safe readings while testing. How to Access the Service Menu
Ensure you are using the correct exit sequence (usually holding the FUNC key). If the radio power cycles abruptly due to a loose DC power connection, the EEPROM will reject the changes and revert to the last saved state.