Anytone At5555n Ii Service Menu - Updated

Depending on your specific firmware revision, utilize one of the following methods.

For advanced calibration (PLL, Deviation, Power).

The AnyTone AT5555N II is a marvel of modern radio design, but the updated service menu transforms it from a consumer appliance into a technician's bench radio. Whether you are compensating for temperature drift or tuning your modulation for pristine broadcast audio, the hidden menu offers granular control that rivals radios costing three times as much.

Remember: Document your original settings before changing anything. Use a calibrated wattmeter, frequency counter, and dummy load. And finally—don’t transmit into a mismatched load while tweaking P-07. You’ve been warned.

Now that you have the updated service menu map, go forth and align your AnyTone to perform better than the day it left the factory.

Disclaimer: This article is for informational and educational purposes only. Unauthorized modification of radio transmitters may violate FCC regulations in the United States or local laws in your jurisdiction. Always operate within legal band limits and power restrictions.

Here’s what you should do:

If you have a specific issue with the radio (e.g., off-frequency, low power, distorted audio), I can give general troubleshooting steps or calibration theory — just let me know.

Accessing the service menu of the AnyTone AT-5555N II allows for fine-tuning of frequency alignment and carrier settings that are not available in the standard user menu. How to Access the Service Menu

To enter the hidden service menu, follow this specific button sequence while the radio is on: Press and hold the While holding , press the following buttons in order: right arrow right arrow button to scroll through the different alignment settings. Service Menu Settings & Meanings

These settings allow for precision alignment of the local oscillator and BFO across different modes. Google Groups Function Description Adjusts the frequency of the 10.24MHz BFO (Beat Frequency Oscillator). Controls the Local Oscillator offset

. It is recommended to adjust this first to get close to the target frequency. fr0, fr4, fr5, fr9 Limit voltages for fine-tuning

increments (e.g., .00, .04, .05, .09). These adjust varicap voltages to affect oscillator capacitance. Important Usage Tips Mode-Specific Alignment : Alignment settings can vary for each position of the

switch. Some settings are shared, while others must be tuned per mode (AM/FM/USB/LSB). Adjustment Order : If your radio is off-frequency on SSB, adjust first, then use

for final tweaks. This prevents the need for extensive re-alignment of the Risk Warning

: There is no official documentation for these settings. Incorrect adjustments can significantly degrade radio performance and cannot be undone with a standard factory reset. Use high-quality frequency counters or test equipment if making changes. PC Software : Professional alignment can also be performed via specific PC Alignment Software (service mode tools) using a programming cable. Google Groups steps or the standard factory reset procedure for this model? Anytone 5555n Ii Service Menu - Google Groups

The AnyTone AT-5555N II is a high-performance 10-meter radio, but many of its most critical calibration settings—like power output and modulation—are tucked away in a hidden Service Menu. Because there is no factory "reset" for this specific menu, users must exercise extreme caution when making adjustments. How to Access the Hidden Service Menu anytone at5555n ii service menu updated

Accessing the service mode requires a specific sequence of button presses during the power-on cycle.

Preparation: Ensure the radio is connected to a dummy load or an antenna to prevent damage.

Initial Combo: With the radio OFF, press and hold both the [MENU] and [MODE] buttons. Power On: While holding those buttons, turn the radio on.

Secondary Sequence: Once the radio powers up, release the initial buttons and immediately press the following top-row buttons in order: [DW], [RB], [NB], [SCAN], [MEM], and [EMG].

Entry Confirmation: If successful, the display should show "FM" (representing the factory menu) or a numerical setting. Navigating and Saving Settings

Scrolling: Use the Channel Selector knob to cycle through different menu items (ranging from 1 to over 50).

Viewing Values: To see the current value of a setting, press the PTT (Push-To-Talk) button on the microphone.

Changing Values: To modify a value, hold the PTT while rotating the Channel Selector. Saving: Turn the radio off to save your changes.

CRITICAL WARNING: Always WRITE DOWN every original value before changing it. There is no software reset for these specific alignment values; if you change them without a backup, you cannot easily restore factory calibration. Key Service Menu Items and Fixes

While the radio lacks official documentation for every item, community testing has identified several critical settings for the AT-5555N II: Description #16 AM High Power Adjusts the peak dead key for AM high power mode. #17 AM Low Power

Adjusts the low power dead key (often set to 2 watts for amp driving). #19 & #20 Modulation Some users set these to "0" to improve AM modulation swing. #52 (RFG) RF Gain Fix

Used to resolve "S5-S7 noise" issues. Increasing this value (e.g., from 86 to 105) can quiet a noisy receiver. Frequency Expansion (Export Mode)

If you are looking to unlock the full 11-meter and 12-meter bands (25.615 to 30.105 MHz), follow this separate procedure: Turn the radio OFF. Hold [FUNC] and [EMG] and turn the radio ON. Rotate the channel knob to select "BAND 2". Long-press [FUNC] until the display shows "rEND". Power cycle the radio.

Accessing the service menu on the Anytone AT-5555N II allows you to perform advanced alignments like frequency offsets and BFO adjustments that are not available in the standard user menu. 1. Enter the Hidden Service Menu

To access the hardware alignment settings, use the following key sequence: the radio. Press and hold the button while turning the radio

Once the radio is on, quickly press the following buttons in sequence: The display should now show service parameters such as Google Groups 2. Navigate and Adjust Parameters Scroll through settings:

button to cycle through different alignment parameters (e.g., Change values: Rotate the Channel Selector

knob to increase or decrease the value for the selected parameter. Save and Exit: Turn the radio to save your changes and exit the service mode. Google Groups 3. Service Menu Parameter Guide Description Local Oscillator Offset:

Use this first to get as close as possible to the center frequency before fine-tuning other settings. BFO Adjustment:

Fine-tunes the Carrier Frequency for CW, USB, and LSB modes. Significant changes here usually require re-aligning Frequency Alignment: Specific alignment points for different modes. For example, Depending on your specific firmware revision, utilize one

is often used for the primary frequency center in SSB modes. 4. Alternative "Ares II / QT40" Method Some newer firmware versions or variants (like the Radioddity QT40 Anytone Ares II ) may use a different sequence: and all other switches to the (on the microphone) while powering on. Quickly move the and back to The display will show . Use the channel selector to navigate parameters. Important Notes Reset Procedure: If you need to revert to factory defaults, hold while powering on. The LCD will display when finished. Software Updates:

For more granular control, including Roger Beep tones and SWR protection limits, use the official Anytone QPS5555N II Software with a compatible programming cable. device.report frequency values for aligning the BFO in USB or LSB modes? Anytone 5555n Ii Service Menu - Google Groups 24 Jul 2024 —

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]. 

Accessing the service menu on the AnyTone AT-5555N II allows you to adjust internal alignment settings like modulation, RF gain, and frequency fine-tuning.

⚠️ WARNING: Record all current values before changing anything. There is no "factory reset" for these specific service parameters. 🛠️ Access the Service Menu Power Off the radio.

Press and hold the [MENU] and [MODE] buttons simultaneously. Power On the radio while holding these buttons. Search on CB/Ham radio forums Popular communities like

Within 2 seconds, release them and quickly press the top row of 6 buttons in order from left to right: [DW], [RB], [NB], [SCAN], [MEM], and [EMG].

The radio will enter Service Mode, typically starting at menu item 01. ⚙️ Key Settings & Controls

Navigation: Use the Channel Selector knob to scroll through the 50+ menu items.

View Data: Momentarily key the PTT (microphone) to see the current value of a setting.

Change Data: While holding the PTT, rotate the Channel Selector knob to adjust the value.

Save/Exit: Power the radio off and back on to save your changes. Common Menu Items

CH-52 (RFG): Adjusts the RF Gain floor. Useful if you have high background noise (S5-S7) with no signal; increasing this value (e.g., from 86 to 105) can quiet the receiver.

Modulation: Lower values on AM modulation settings typically result in higher modulation (less clamping).

Alignment: Settings like bfC and fr0–fr9 control the BFO and fine-tuning voltages for different modes. 🔓 Frequency Expansion (11m Mode)

If you need to switch between the 10m amateur band and the expanded 11m band: Power Off the radio. Hold [FUNC] and [EMG] while powering on.

Turn the channel knob to select BAND 2 (expanded) or BAND 1 (10m).

Press [FUNC] to confirm; the screen will show rES then rEND.

For advanced PC-based adjustments, ensure you have the correct programming cable and software specifically for the "N II" version.

The AnyTone AT-5555N II is a high-performance 10-meter amateur radio often used by enthusiasts for long-distance communication (DXing) across AM, FM, and SSB modes. While its standard menus cover everyday features like noise reduction, ECHO, and VOX, there exists a deeper "hidden" service menu often whispered about in radio forums—a place where technical mastery can either perfect a rig or "toast" it entirely. The Legend of the Hidden Menu

For many owners, the radio is a reliable workhorse straight out of the box. However, a specific community of "golden screwdriver" operators seeks to unlock its full potential through the service menu. This hidden area lacks official documentation, forcing enthusiasts to reverse-engineer its settings.

Accessing the "Inner Sanctum": To enter this mode, users must follow a precise sequence: power on the radio while holding FUNC, then quickly press RB, NB, and DW (or a similar series depending on the firmware version).

The Fine-Tuning Mystery: Within this menu, settings like bfC, fr0, and loC appear. Pioneers discovered that these control the BFO (Beat Frequency Oscillator) and varicap voltages, allowing for surgical-level alignment of SSB signals that might be slightly off-frequency.

The S-Meter "Ghost" Fix: Some newer units were reported to have a "noisy receive," where the S-meter showed a constant signal even when the air was silent. Tech-savvy owners discovered a service menu fix: by navigating to CH-52 (RFG) and adjusting the RF Gain value—typically from a default of 86 up to 105—they could "tame" the ghost signal and clear the receiver. A Cautionary Tale: The Hamfest Mystery

Not every service menu story has a happy ending. One operator famously shared their experience of buying a secondhand AT-5555N II at a Hamfest. The radio appeared normal, even displaying the previous owner's custom call sign on the LCD. However, upon powering it up, the S-meter was permanently pegged, and the radio emitted nothing but static.

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

If you're looking to explore your own unit's deeper features: Anytone 5555n Ii Service Menu - Google Groups