Anytone At5555n Ii Service Menu Updated -
On some updated mainboards, the entry method has changed to prevent accidental entry:
Yes, but only if you have a calibrated external frequency counter and a dummy load. The updated service menu on the AT-5555N II is a massive improvement over the older, clunkier interfaces. It turns a great production radio into a precision instrument.
If you just bought the radio and it works fine—leave the menu alone. But if you are a seasoned tech looking to squeeze every drop of performance out of your 5555N II, the updated service menu is your new best friend.
Have you found any new hidden parameters in the latest firmware? Let us know in the comments below!
Stay tuned for more CB and amateur radio tips. Until then, keep the mic warm and the SWR low.
The AnyTone AT-5555N II Go to product viewer dialog for this item.
(Version 2) has fundamentally shifted how users align and customize their radios by moving almost all physical potentiometer adjustments into a digital Service Menu. This updated guide details how to access these hidden settings and what they control, based on the latest community findings from WorldwideDX Radio Forum and technical insights from MW0UZO. Crucial Safety Warning
Before entering the service menu, you must write down every original value. The AT-5555N II
has no factory reset for service menu settings. Changing these without a reference can permanently de-align your radio's frequency or power stages. Always use a dummy load when making power adjustments. How to Access the AT-5555N II Service Menu
The entry sequence for the updated Version 2 (N II) is more complex than the original model. Preparation: Start with the radio turned OFF.
Initial Hold: Press and hold the MENU and MODE buttons simultaneously. Power On: While holding those buttons, turn the radio ON.
The Sequence: As soon as the LCD segments appear (about a 2-second window), release the first two buttons and quickly press the following buttons in order: DW, RB, NB, SCAN, MEM, and EMG.
Confirmation: If successful, "FM" (Factory Menu) will appear on the screen. Updated Menu Navigation & Controls
Scrolling: Use the Channel Selector knob to cycle through the menu items (typically up to 53+ parameters).
Viewing Values: Key the PTT (Push-To-Talk) on the microphone to display the current numeric value of a setting.
Changing Values: While holding the PTT, rotate the Channel Selector to adjust the value up or down.
Saving: Power cycle the radio (turn off and back on) to save your new settings. Key Service Menu Settings (V2 Updated)
Based on the latest technical reports, these are the most common adjustments sought by users: Label / Function Description & Recommendations #16 AM High Power
Sets the maximum carrier (dead key) for AM when the front panel power is at max. #17 AM Low Power
Sets the minimum carrier for AM. Often lowered to 2W for driving external amplifiers. #19 / 20 AM Modulation
Controls the AMC (Automatic Modulation Control). Lower values generally increase modulation swing. #52 RFG (RF Gain)
Updated Workaround: Increasing this value (e.g., from 86 to 105) can help mitigate "S7 noise" issues on newer boards. bfC BFO Frequency
Used to align the Beat Frequency Oscillator for USB/LSB modes. loC Local Oscillator
Sets the offset for the local oscillator to ensure frequency accuracy. Firmware & Software Alternative anytone at5555n ii service menu updated
For users who prefer a graphical interface, many of these "Background Functions" (such as Noise Reduction levels, SWR protection, and Mic Gain) can be adjusted using the official PC programming software and a compatible programming cable. However, core hardware alignment (like power stages and reference oscillators) usually remains restricted to the boot-up service menu. AT-5555 service menu alignment procedure
I understand you're looking for information on the AnyTone AT-5555N II service menu, specifically an updated or corrected version.
However, I need to provide a critical warning before proceeding:
The following parameters are typically accessible in the updated service menu. Note that not all versions display every option.
| Parameter | Description | Notes | | :--- | :--- | :--- | | SQUELCH | Sets the threshold for the squelch potentiometer. | Usually calibrated so the outer knob positions correspond to tight and loose settings. | | RF POWER | Adjusts the High and Low power output levels. | Critical: Do not exceed the radio's design limits (typically 25W-40W depending on the model). Overdriving reduces lifespan. | | FM DEVIATION | Sets the modulation width. | Critical for clear audio. Too
To access the updated service menu on the AnyTone AT-5555N II, you can use a specific power-on key sequence. This hidden menu allows for calibration of power levels, modulation, and RF gain, though it should be used with extreme caution as there is no factory reset specifically for these internal service parameters. Accessing the Service Menu
Preparation: Connect the radio to a dummy load or a tuned antenna to prevent damage during testing.
Power On: While the radio is off, press and hold the [MENU] and [MODE] buttons.
Key Sequence: Turn the power on while holding those buttons. Within two seconds (while the LCD segments are displayed), release them and quickly press the following six buttons in order: [DW], [RB], [NB], [SCAN], [MEM], and [EMG].
Verification: If successful, the screen will display a mode like "FM" or a numbered menu item (e.g., #01), indicating you are in the factory service mode. Navigating and Adjusting Settings
Scrolling: Use the Channel Selector knob to cycle through the approximately 59 available menu items.
Viewing Values: To see the current value of a menu item, press and hold the PTT (Push-To-Talk) button on the microphone.
Changing Values: While holding the PTT, rotate the Channel Selector knob to increase or decrease the value.
Saving: Turn the radio off to save and exit the service menu. Common Service Menu Items
While exact item numbers can vary slightly between firmware updates, users frequently target these specific calibrations:
RF Gain Calibration (#52): Used to fix "noisy" receive issues where the S-meter shows signal (e.g., S7) with no actual input. Increasing this value (e.g., from 86 to 105) can help normalize the receiver.
AM Power (#16 & #17): Item #16 typically controls AM High Power (dead key) and #17 controls AM Low Power.
Modulation (#19 & #20): These settings often control the modulation swing for different modes.
Warning: Always write down your original factory values before making any changes. If you lose your original settings, there is no way to automatically restore the radio to its factory-calibrated state.
Unlocking the Full Potential of the Anytone AT-5555N II: A Guide to the Updated Service Menu
The Anytone AT-5555N II is a popular and versatile two-way radio that has been a favorite among amateur radio enthusiasts, emergency responders, and business users alike. With its robust feature set and reliable performance, it's no wonder that this radio has become a staple in many communication systems. Recently, an updated service menu has been made available, offering even more advanced features and customization options for users.
In this post, we'll take a closer look at the Anytone AT-5555N II and explore the new features and benefits of the updated service menu.
What is the Anytone AT-5555N II?
The Anytone AT-5555N II is a compact and rugged two-way radio that operates on both VHF and UHF frequencies. With a frequency range of 136-174 MHz and 400-470 MHz, this radio offers wide coverage and reliable communication. It features a 5-watt transmitter, 2000mAh battery, and a large LCD display, making it an ideal choice for both mobile and portable use.
What is the Service Menu?
The service menu is a hidden menu system that allows users to access advanced features and settings on their Anytone AT-5555N II radio. This menu is typically used by service technicians and advanced users to customize and troubleshoot the radio. The updated service menu offers a range of new features and options, including:
How to Access the Updated Service Menu
To access the updated service menu on your Anytone AT-5555N II, follow these steps:
Benefits of the Updated Service Menu
The updated service menu offers a range of benefits for Anytone AT-5555N II users, including:
Conclusion
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.
Disclaimer
The information provided in this post is for educational purposes only. Users should exercise caution when accessing the service menu, as incorrect settings can potentially damage their radio. It's recommended that users consult the user manual or contact a qualified service technician if they're unsure about any aspect of the service menu.
Unlocking the Full Potential of the Anytone AT5555N II: A Guide to the Updated Service Menu
The Anytone AT5555N II is a popular and highly-regarded ham radio transceiver that has been a favorite among amateur radio enthusiasts for years. Known for its robust feature set, excellent performance, and durability, the AT5555N II has become a staple in many ham radio operators' arsenals. However, to truly unlock the full potential of this remarkable radio, users need to access the service menu, and in this article, we'll explore the updated service menu for the Anytone AT5555N II.
What is the Service Menu?
For those who may not be familiar, the service menu is a hidden menu in the Anytone AT5555N II that allows users to access advanced settings and configurations. This menu is not part of the standard user interface and is typically used by service technicians and advanced users to calibrate, configure, and troubleshoot the radio. The service menu provides access to a wide range of parameters, including frequency calibration, transmitter adjustment, and receiver settings, among others.
Why is the Service Menu Important?
The service menu is essential for several reasons:
The Updated Service Menu for the Anytone AT5555N II
Recently, an updated service menu for the Anytone AT5555N II has become available, offering a range of new features, improvements, and enhancements. This updated menu is designed to provide users with even more flexibility and control over their radio, allowing them to optimize its performance and take advantage of new capabilities.
Key Features of the Updated Service Menu
Some of the key features of the updated service menu for the Anytone AT5555N II include:
How to Access the Updated Service Menu
Accessing the updated service menu for the Anytone AT5555N II requires a few specific steps: On some updated mainboards, the entry method has
Important Safety Precautions
When accessing and adjusting the service menu, it's essential to exercise caution and follow proper safety procedures:
Conclusion
The updated service menu for the Anytone AT5555N II offers a wealth of new features, improvements, and enhancements that can help users unlock the full potential of their radio. By accessing and adjusting various parameters, users can optimize their radio's performance, troubleshoot issues, and take advantage of new capabilities. However, it's essential to exercise caution and follow proper safety procedures when working with the service menu. With this guide, you'll be well on your way to becoming an expert in using the updated service menu for the Anytone AT5555N II.
Additional Resources
For more information on the Anytone AT5555N II and its service menu, we recommend the following resources:
By exploring these resources and taking the time to learn about the updated service menu, you'll be able to get the most out of your Anytone AT5555N II and enjoy a more rewarding ham radio experience.
The AnyTone AT-5555N II (Version 2) features a revised internal service menu compared to the original AT-5555N, with recent updates (specifically the v3 firmware released around late 2024) introducing more granular control over modulation and noise reduction [10, 13]. Accessing the Service Menu To enter the hardware service menu on the AT-5555N II: Turn the radio OFF. Press and hold the FUNC and SCAN buttons simultaneously. Turn the radio ON while continuing to hold the buttons.
The display will enter the service mode, allowing you to scroll through settings using the channel selector [6, 8, 10]. Key Service Menu Settings
Recent user findings and firmware updates identify several specific parameters used for fine-tuning performance [6, 10]: Setting Adjustment Tips bfC BFO Frequency
Adjusts the 10.24MHz Beat Frequency Oscillator. Critical for clearing up garbled SSB reception [6]. fr0 - fr9 Fine Tuning Limits
Controls voltage across varicaps for precise frequency steps (.00, .04, .05, .09). Align these after any BFO change [6]. loC Local Oscillator Offset
Used to align the radio if it is consistently "off" across all modes. Change this before bfC [6]. Modulation TX Audio
Updated v3 firmware includes better "deviation" control to prevent over-modulation in FM/AM modes [10]. Software-Based Alignment
A new PC Alignment Software (v1.03) has been released that supports the AT-5555N II [13].
Purpose: Allows for reading, saving, and restoring factory alignment settings.
Requirements: Needs the standard programming cable (CH341SER or PL-2303) and Firmware V1.01 or newer [13, 14].
Warning: Alignment files are unique to each unit. Do not upload an alignment file from one radio to another as it will cause incorrect calibration [13]. Notable Hardware Improvements (N II Version)
The AT-5555N II is frequently compared to the Stryker 955 v2 due to shared internal architecture but includes several proprietary AnyTone features [5, 9]:
Noise Reduction: Integrated TX and RX digital noise reduction (NRC) which is widely praised for cleaning up static on the 11m/10m bands [1, 9]. Power Output: Capable of 60W PEP in export mode [7, 10].
Modifications: The "expansion" to the 11-meter (CB) band is typically handled via a button combination (hold FUNC + EMG while powering on) rather than physical wire cutting on newer boards [5, 12].
Important Safety Note: 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 most common reason to use the service menu is to correct frequency drift or align the radio to a frequency counter. Yes , but only if you have a
How to align (Updated for V2.x):