Anytone At5555n Ii Service Menu Work [top]

An accurate inline power meter (such as a Bird 43) to measure true RF output.

To see the current stored value for a selected item, press and hold the PTT (Push-to-Talk) button on the microphone.

: Rotate the main Channel Knob to scroll through the different adjustment functions (e.g., FM power, AM modulation, frequency calibration).

Controls AM modulation swing; some users reset these to "0" for better RMS swing. Alignment anytone at5555n ii service menu work

Before changing any numerical value, write down the original factory number. Every single radio leaves the factory with unique values tailored to its individual board components. There is no "universal master reset" to restore these custom hardware tunings.

Aligns the radio precisely on-frequency, which is especially critical for Single Sideband (SSB) operation where even a 50 Hz deviation sounds distorted.

: If successful, the display will change to show the service menu items (e.g., beginning with modulation modes or specific channel codes like "FM" or "01"). Service Menu Operations An accurate inline power meter (such as a

Accessing the service menu on your Anytone AT5555N II can be beneficial in several ways:

If SSB signals sound robotic or high-pitched regardless of your clarifier position, the reference oscillator value in the service menu may have been altered. This requires a highly accurate frequency counter to fix.

Tweak the parameter to lock in fine adjustments. This step-by-step order preserves the linearity of the fr0-fr9 fine-tuning voltages, ensuring smooth clarifier operation. Controls AM modulation swing; some users reset these

Honestly?

Entering the service menu and changing values without proper equipment (frequency counter, oscilloscope, RF power meter, and dummy load) can permanently detune your radio, making it unusable. Proceed with caution.

: These control fine-tuning limit voltages across different varicaps, ensuring your frequency steps are even. loC : Controls the local oscillator offset. 3. The Warning Label