Anytone At5555n Ii Service Menu Updated

Press and hold the FUNC button and the PUSH (Channel) knob simultaneously. Power On: While holding those buttons, turn the radio on.

Despite trying every external setting, the radio was unusable. The diagnosis from the community? A previous owner had ventured too far into the hidden service menu without a map, tweaking critical alignment parameters until the radio's "brain" was misaligned beyond basic repair. It stands as a reminder that while these menus offer power, they require the precision of a technician. Quick Reference for Adventurous Owners

for final fine-tuning. This helps keep the fine-tuning (fr) range smooth. Hard Reset:

Comprehensive Guide to the AnyTone AT-5555N II Service Menu (2026 Updated)

Setting RF power biases too high will overheat and destroy the final output transistors (MOSFETs), voiding your warranty. How to Access the Anytone AT-5555N II Service Menu anytone at5555n ii service menu updated

Before changing a single digit, write down your factory default values on a piece of paper or take photos of the screen.

These relate to frequency calibration. Adjust these carefully, specifically loC (local oscillator offset) for USB/LSB centering.

A: No. A standard factory reset (FUNC+INFO on power up) only resets user settings (channel memories, mic gain, RF power). The service menu parameters are stored in a protected EEPROM sector and remain untouched. You must manually revert changes.

The LCD should now display the service menu codes instead of the standard frequency or channel. Google Groups 2. Service Menu Parameters Press and hold the FUNC button and the

While the service menu handles hardware calibration, "Mode 2" (Export Mode) is often what users are actually looking for to expand the frequency range (24.715 – 30.105 MHz). Turn the radio off. Press and hold and SCAN . Turn the radio on. Select "24-30" or "MODE 2" using the channel knob. Press and hold FUNC to save and restart. Troubleshooting Common Issues

Adjusting service menu parameters without a signal generator and frequency counter can permanently degrade radio performance. Always record your original factory values before making changes [13].

The service menu allows you to modify the foundational parameters of your radio's operation. Modifying these values incorrectly can cause distortion, excessive heat, out-of-band transmissions, or even damage the final transistors.

Sets the baseline noise floor calibration. 4. TX Modulation & Deviation The diagnosis from the community

: Press and hold the FUNC key for two seconds to save your configuration to the EEPROM memory and exit. If you wish to abort without saving, turn the radio off via the power knob. Service Menu Parameters Explained

Once inside, you can scroll through the menu items using the Channel Selector knob. According to recent user reports and updated guides, the menu contains over 30+ items.

Accessing and altering the service menu typically voids the manufacturer's warranty.

If you are looking to dive deeper into this radio, I can provide you with the , step-by-step S-meter generator calculation steps , or the specific firmware history differences for the AT-5555N II. Let me know what you need to optimize your setup! Share public link