Once on, press the following keys in quick succession: , then [NB] , then [DW] . The display should now show the service menu options.
If you don’t know what the parameter does, do not change it.
Turn off the transceiver using the main volume/power knob. anytone at5555n ii service menu work
Working in the engineering menu carries risks. Misconfiguration can result in distorted audio, low power output, or a permanently damaged transmitter stage.
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. Once on, press the following keys in quick
For the dedicated CB and 10-meter radio enthusiast, the represents a pinnacle of modern design. It combines the classic look of a vintage retro-style rig with cutting-edge DSP (Digital Signal Processing) and frequency stability. However, like all high-performance export radios, its true potential—and occasionally its necessary fixes—are locked behind a digital vault known as the Service Menu .
There are two common methods reported, depending on your firmware version or specific hardware revision: Turn the radio OFF . Hold down the FUNC button while turning the radio ON . Turn off the transceiver using the main volume/power knob
: Use the Channel Selector knob to move through the numbered menu items.
These values regulate the drive levels for the final amplifier stage. They are typically split by mode: : Sets the maximum carrier output.
When adjusting BFO or oscillator voltages, only change the value by one or two digits at a time. A small change in a varicap voltage can equal a massive shift in frequency output. Let Us Help You Get the Most Out of Your Radio! The AnyTone AT-5555N II
Changing these values without proper test equipment (spectrum analyzer, frequency counter) can result in the radio transmitting off-frequency or causing interference on adjacent channels.