Work !link! — Anytone At5555n Ii Service Menu
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).
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.
Hold down and [SCAN] at the same time, then turn on the radio. Release the keys when the LCD displays "RES".
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. anytone at5555n ii service menu work
Once in the service menu, you can navigate using the channel selector. While specific settings are not documented officially, community efforts have identified the core functions: 1. Frequency and Clarifier Alignment (TCXO)
For any specific, hard-to-fix alignment issues, it is highly recommended to consult with a professional radio technician. Share public link
If Single Sideband (USB/LSB) signals sound distorted or require you to ride the clarifier constantly, your BFO values need calibration: One of the biggest lies in a radio is the S-Meter
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.
The AT-5555N II uses a button combination sequence to unlock the hidden engineering parameters. Do not confuse this with the simple "Factory Reset" (hold FUNC + A/F while powering on). The Service Menu is deeper.
Rotate the main Channel selector knob to scroll through the numbered alignment states. While its front-facing user interface offers a basic
: Adjusts the microphone audio width in FM mode. Standard calibration is typically set for a maximum of 2.5 kHz or 5.0 kHz deviation depending on regional bandwidth rules. 5. S-Meter Calibration (RX-S1 / RX-S9)
: Controls the default RF Gain level. Some users adjust this (often set to ~86) to reduce high background floor noise.
The Anytone AT-5555N II service menu is a powerful but risky tool. The radio is designed to perform very well straight out of the box, and most of the adjustments you'll need are readily available in the user-friendly standard menu. The service menu should be seen as a last resort for advanced troubleshooting or calibration, and it should only be used by those who understand the high risks involved.
Modifying settings in the service menu alters the core operational firmware of the transceiver. If you change a setting without recording its factory baseline, your radio may suffer permanent alignment errors or damage components like the final transistors.
Most users looking for the service menu want to adjust power output or fix a high noise floor. Here is how to achieve those goals, either through the standard menu or by safely using one service menu parameter.
