Anytone At5555n Ii Service Menu Work Jun 2026
π§ Turn the radio off. Press and hold the FUNC button and the BAND button simultaneously, then power on the radio while holding them. Keep holding until the display shows "SERVICE" or a different firmware version indicator.
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.
Once inside the menu, navigation is handled through the front panel controls and the microphone.
The audio was muffled, the output power was swinging erratically, and worst of all, the frequency display had locked into a weird offset mode he couldn't clear. He was dead in the water, unable to raise his dispatcher or his usual road dog, "Big Mike." anytone at5555n ii service menu work
If youβve been inside yours, drop your firmware version and any weird findings below. Letβs help each other avoid bricking these otherwise great rigs.
Technical documentation, such as the full service manual or video demonstrations from certified technicians, provides essential context for these adjustments. For those performing this work, utilizing specialized test equipment like an oscilloscope or a signal generator is recommended to ensure the radio remains within its designed operating specifications and safety limits. Following established amateur radio engineering standards helps maintain the longevity and legality of the equipment. Anytone 5555n Ii Service Menu - Google Groups
: Before changing any value, write down the original factory setting for every item. If you make a mistake without recording the original numbers, you may permanently decalibrate your radio. π§ Turn the radio off
However, for radio enthusiasts and technicians who want to push their rig to its absolute limits, standard user settings just won't cut it. That is where the hidden (or engineering menu) comes into play.
Release the keys once the LCD screen displays a service interface, often indicated by code labels like "F01" or raw hexadecimal tuning values.
Working in the engineering menu carries risks. Misconfiguration can result in distorted audio, low power output, or a permanently damaged transmitter stage. The AnyTone AT-5555N II is regarded by many
This is the most common reason operators enter the service menu. The AT-5555N II uses a robust RF deck, and the factory often limits power output to meet specific legal regulations (like CE standards in Europe).
Many users have fallen into traps when exploring the service menu. Being aware of them can save your radio.
: Turn the radio on and let it sit for 10 to 15 minutes before adjusting frequency alignment. Internal components need to reach operating temperature stability first.