To enter the hidden service menu, use the following key sequence: the radio. Hold down the [FUNC] button and turn the radio on .
Use a high-quality, regulated DC power supply to prevent noise and voltage spikes.
If the radio behaves erratically after exiting the menu: anytone at-5555n ii service menu
Never perform service menu adjustments while connected to a live antenna. You will cause local spectrum interference and varying SWR readings will skew your power calibrations.
handles everyday settings like Roger Beep and Squelch levels, the service menu is where you perform critical alignments and adjust internal gain settings. How to Access the AT-5555N II Service Menu Accessing this menu requires a specific power-on sequence. To enter the hidden service menu, use the
Sets the base absolute reference clock alignment for the synthesizer. Mode-Specific Offsets
What your radio is showing (e.g., low audio, off-frequency, incorrect S-meter)? If the radio behaves erratically after exiting the
It is incredibly tempting to use this menu to "supertune" or crank the AT-5555N II past its factory ratings. Forcing the radio to push out excess wattage will overheat the finals, saturate the transformers, distort your audio, and cause premature component failure. 3. S-Meter Calibration (Receive & Transmit)
To access the factory service (hidden) menu on the Anytone AT-5555N II, you must perform a specific button sequence during startup. This menu is used for internal hardware calibrations and should be used with extreme caution. Access Procedure : Ensure the radio is powered OFF.
Once you have adjusted a setting, press and hold the FUNC key or power the radio off and back on. This writes the new values to the EEPROM memory. Key Service Menu Parameters Explained
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