To clear user settings and return to a default frequency range (typically 25.615 to 28.305MHz), hold while powering on. Google Groups User Background Menu (Standard)
Your radio performs fine-tuning by adjusting the voltage across a set of varicaps, which alters the capacitance and the oscillator's frequency. These specific settings ( fr0 , fr4 , fr5 , fr9 ) correspond to the limit voltages for the .00, .04, .05, and .09 frequency steps. 3. Local Oscillator Offset ( loC )
In the standard user menu (long-press MENU ), navigate to menu item 01 and set it to 36 . This unlocks several hidden software parameters Anytone at-5555n II (version 2) | Page 39 - WorldwideDX Radio Forum .
: Turn the radio off to save and exit the service menu. Common Service Menu Items anytone at5555n ii service menu updated
The screen should now display "FM" (or similar) indicating the factory menu is active. 2. Service Menu Structure & Key Items
Parameters P-11 through P-15 are now active, controlling AGC attack/release times and display brightness curves.
To enter the hidden service menu, follow these steps precisely: : Ensure the radio is powered off. To clear user settings and return to a
The Anytone AT-5555N II is a powerful and versatile two-way radio that offers reliable communication and advanced features. With the updated service menu, users can unlock even more customization options, improve performance, and enhance security. Whether you're an amateur radio enthusiast, emergency responder, or business user, the Anytone AT-5555N II with the updated service menu is an excellent choice for your communication needs.
Note: If your radio boots normally into standard frequency mode, turn it off and retry the timing of the button presses. Navigating and Editing the Menu
Before describing the menu, a strong warning is necessary. The Anytone AT-5555N II's service menu is not like the regular user menu and contains factory calibration parameters that are unique to each individual radio. Entering it without the proper test equipment, such as a frequency generator or oscilloscope, can have serious consequences. : Turn the radio off to save and exit the service menu
Press the knob to enter the setup and rotate to change settings.
You must write down every single original hex or decimal value before changing it. There is no automatic "factory reset" that restores individual service menu calibrations once they are overwritten.
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