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Use a high-quality, calibrated SWR/Wattmeter to monitor results. Do not exceed the rated output. 3. Modulation/Deviation Levels
Alternative Method : Some versions use a sequence of pressing all 6 buttons from to EMG after the initial boot. Key Settings and Navigation
A: Most likely, yes. Any manufacturer warranty is typically voided if you open the radio or attempt internal modifications. Changing hidden service menu parameters would almost certainly fall into this category. anytone at5555n ii service menu work
Unlike the standard user menu, the service menu allows you to calibrate the radio's core hardware behaviors, such as transmitter power levels, modulation limits, and frequency stability. Understanding the AnyTone AT-5555N II Service Menu
If local operators report that your audio is too quiet or heavily distorted, the service menu allows you to adjust the internal microphone amplification stages. Increasing the AM modulation depth or FM deviation too high will cause "splatter" across adjacent channels, while setting it too low makes your signal unreadable. 3. S-Meter Calibration If executed correctly
If you’ve been inside yours, drop your firmware version and any weird findings below. Let’s help each other avoid bricking these otherwise great rigs.
Once on, press the following keys in quick succession: , then [NB] , then [DW] . The display should now show the service menu options. such as transmitter power levels
If executed correctly, the radio will bypass its normal boot sequence and enter the service menu. On some versions, you may need to set Setting 01 in the regular menu to 36 before attempting this sequence.
Rotate the main Channel selector knob to scroll through the numbered alignment states.
Immediately release MENU and quickly press the following three buttons in sequential order: .
