The AnyTone AT-5555N II is regarded by many as the last "real" CB radio. While its front-facing user interface offers a basic menu, the true capability of the radio lies hidden behind a key combination known to technicians but rarely explored by the average operator.
Welcome to the Service Menu. This is where the hardware meets the software, and where you can tune your rig from a "stock radio" into a precision communication device.
Unlike older radios (like the Galaxy 959 or Uniden 980), the AT-5555N II service menu does NOT save changes automatically.
To save: After adjusting a parameter (e.g., P-32), you must press and hold the "FUNC" button for 2 seconds. The screen will beep or flash, confirming the write to EEPROM. anytone at5555n ii service menu work
To exit: Power off the radio completely. Wait 5 seconds. Power on normally. Your changes are now active.
To verify: Test the radio with a wattmeter, frequency counter, or on-air friend before closing the chassis.
If you have the proper test equipment, follow this workflow: The AnyTone AT-5555N II is regarded by many
The menu typically consists of several columns of numbers. Below are the most impactful parameters you will encounter and what they actually do.
If your SSB audio sounds distorted or "splattery," the ALC is set too high. If no one can hear you, it is set too low.
Parameters: Pc-H (High power SSB limit)
Procedure:
One of the biggest lies in a radio is the S-Meter. Manufacturers often calibrate these to flatter the user (making signals look stronger than they are).
If you want, I can convert this into a printable one-page technician checklist, a step-by-step guided calibration for a specific parameter (TX power, PA bias, or VCO trim), or a troubleshooting flowchart — tell me which. If you have the proper test equipment, follow