Anytone At-5555n Ii Service Menu __link__ Jun 2026

It’s surprisingly simple, but the key combination isn’t in the user manual.

Never transmit into an antenna while adjusting service menus. SWR fluctuations during tuning can instantly destroy the final transistors. Always use a 50-ohm dummy load. Keep Modest Targets

Immediately press the following buttons in sequence: , then [NB] , then [DW] . Service Menu Navigation

Before considering any modifications to the internal settings of a transceiver, it is vital to understand the risks involved. The service menu is intended for use by qualified technicians with specialized calibration equipment. anytone at-5555n ii service menu

Do you need to include details about the alongside the software menu? What is your target word count or length goal? Share public link

The you are trying to fix (e.g., low power, off-frequency, incorrect S-meter) What test equipment you have available

Capable of reading up to 30 MHz with high precision to verify the reference oscillator. It’s surprisingly simple, but the key combination isn’t

If successful, the display will change. Instead of showing a channel or frequency, you will likely see something like or "R-01" on the screen, or a parameter code like "POWER HI" .

: Ensure you are holding the correct buttons completely down before turning the power knob. Some export versions require a hardware pad to be bridged inside the radio before the software menu unlocks.

Change the transceiver mode to the target band (e.g., AM or FM) via the switch. Always use a 50-ohm dummy load

Allow the transceiver to sit powered on for at least 15 to 30 minutes before calibrating the frequency oscillator. This ensures internal components reach thermal equilibrium. Conclusion

If your radio reports an "S9" signal on an empty channel, or fails to register strong incoming signals, the receiver calibration parameters can fix it.