Anytone At5555n Ii Service: Menu Updated Link

Unlocking the Beast: The Complete Guide to the AnyTone AT5555N II Service Menu (Updated for New Firmware)

If you own an AnyTone AT5555N II, you already know you possess one of the most powerful, feature-packed AM/FM/SSB mobile radios on the 10-meter and 12-meter bands (often used as a "10-meter" export radio). But beneath the sleek front panel and multi-colored display lies a secret control center: the Service Menu.

Recent firmware updates (post-2023) have changed how users access and navigate this hidden diagnostic suite. Welcome to the updated guide for the AnyTone AT5555N II Service Menu.

Final Verdict: Should You Go In?

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.

If You Still Want the Data

For legitimate engineering or repair purposes, search for:

• "AnyTone AT-5555N II service manual 2023" (PDF from authorized dealers)
• "AT-5555N II hidden menu values spreadsheet" (shared by radio techs on QRZ or eHam)
• "AT-5555N II calibration constants list" – but verify against your firmware version

Do not trust random YouTube videos or forum posts claiming to have "the full updated list" unless they show before/after spectrum analyzer measurements.

Here are a few post templates tailored for different platforms regarding the AnyTone AT-5555N II Go to product viewer dialog for this item. service menu.

📝 Option 1: Informative & Cautionary (Best for Forums/Facebook Groups)

Title: ⚠️ Updated Guide: How to Safely Access & Use the AnyTone AT-5555N II Service Menu Thinking about tweaking your modulation or power on the AT-5555N II

? Proceed with caution! There is no master reset for the parameters in this menu once you change them. Here is the updated step-by-step to get in safely:

Preparation: Hook up your radio to an antenna or dummy load first.

The Key Combo: With the radio powered OFF, press and hold the MENU and MODE buttons simultaneously.

The Sequence: Turn the radio ON while holding them. As soon as it powers up, release them and quickly press the other buttons in a line from DW all the way down to EMG.

Crucial Step: Scroll through the settings using the channel selector. Grab a pen and paper or open a spreadsheet and WRITE DOWN ALL FACTORY VALUES before turning any dials!

Adjusting: To change or view a parameter's active level, key your microphone. To alter the data, hold the PTT and rotate the channel selector. Power cycle the radio when you are done to save.

Drop a comment below with your stock factory numbers if you are willing to share a baseline for the community! 👇 #AnyTone #AT5555NII #HamRadio #10MeterRadio #RadioMods 📸 Option 2: Short & Punchy (Best for Instagram/X)

⚠️ ATTENTION ANYTONE USERS ⚠️Thinking about jumping into the service menu of your AnyTone AT-5555N II

to peak your power or fix your S-meter? Read this first! 👇 anytone at5555n ii service menu updated

1️⃣ Always hook up a dummy load before transmitting/testing.2️⃣ Access the menu by holding MENU + MODE on startup, then quickly tapping the top buttons in sequence over to EMG.3️⃣ NEVER change a value without writing down your stock factory numbers first. There is no "factory restore" button for these alignment settings! Keep those radios sounding crisp! 🎙️⚡

#HamRadio #AnyTone #CBRadio #10Meter #RadioTech #AmateurRadio

🎥 Option 3: Video Concept Script (Best for TikTok/YouTube Shorts) Visual: You sitting in front of your AnyTone AT-5555N II radio with the camera focused on the digital face.

Audio/Voiceover:"Stop! Before you go turning knobs in the hidden service menu of your AnyTone AT-5555N II

, you need to know this. To get in, you hold MENU and MODE while flipping the power switch, then quickly tap the top row of buttons from DW to EMG.

Once you're in, you will see a list of numbered alignment parameters. But here is the golden rule: DO NOT CHANGE ANYTHING until you have written down every single stock number on a piece of paper! There is no master reset button for these alignment parameters. If you mess up your carrier or modulation limiters without a backup, you're flying blind! Hit that follow button for the specific menu breakdown!"

Which specific parameter are you trying to adjust (like AM modulation or S-meter sensitivity) so I can add those exact steps to your post?

Here’s what you should do:

1. Check official sources
   Visit the AnyTone official website or the support page for the AT-5555N II. Look for:

   • Service manuals
   • Firmware release notes
   • Technician bulletins

2. Search on CB/Ham radio forums
   Popular communities like WorldwideDX.com, RadioReference.com, or Transmission1 often have updated service menu entries and hidden key combinations shared by users or reps.

3. Typical service menu access (older models)
   On previous AnyTone 5555 series radios, the service menu was often entered by:

   • Turning the radio off
   • Holding specific buttons (e.g., FUNC + 6 or FUNC + A/F)
   • Turning power on while holding them
     This may have changed for the N II version.

4. Use precise keywords
   Try searching:
   "AnyTone AT-5555N II service menu key combination"
"AT-5555N II alignment procedure"
"AT-5555N II hidden menu"

5. Warning
   The service menu allows calibration of frequencies, power output, modulation, and S-meter.
   ⚠️ Do not change values unless you have proper test equipment (frequency counter, power meter, oscilloscope).
   Incorrect settings can permanently detune the radio.

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.

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 Unlocking the Beast: The Complete Guide to the

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 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

The AnyTone AT-5555N II Go to product viewer dialog for this item. Stay tuned for more CB and amateur radio tips

service menu allows for deep calibration of the radio's frequency alignment and modulation levels, which are not accessible through the standard user menu. Accessing the Service Menu

To enter the hidden service menu, follow this specific power-on sequence: Turn off the radio.

Press and hold the FUNC button while turning the power back on.

Release FUNC and quickly press the following buttons in sequence: RB → NB → DW.

The display will change to show alignment codes. You can then use the MODE switch to access settings for specific modes (AM, FM, USB, LSB) and the FUNC button to scroll through individual parameters. Service Menu Parameter Guide

While official documentation is sparse, enthusiast testing has identified several key alignment settings within this menu:

bfC: Adjusts the frequency of the 10.24MHz BFO (Beat Frequency Oscillator). This is a critical adjustment for ensuring the radio is centered on frequency in SSB modes.

fr0, fr4, fr5, fr9: These correspond to voltage limit settings for fine-tuning at specific frequency increments (.00, .04, .05, and .09). They control the varicaps to ensure smooth frequency steps.

loC: Controls the local oscillator offset. Experts suggest adjusting lo first to get as close to the target frequency as possible before using bf for final tiny tweaks.

Modulation (IC9): In newer versions or related "Plus" models, navigating to the IC9 setting allows you to increase modulation levels (often defaulted to 31) up to 63 for stronger transmit audio. Standard User Menu vs. Service Menu

For daily operation, you should use the standard Background Function Menu rather than the service menu to avoid accidentally de-aligning the radio. Enter User Menu: Long-press MENU for 2 seconds.

Common Settings: You can adjust Squelch (SQ) levels from 1-36, toggle ECHO functions, or set SWR Protection.

Frequency Expansion: The radio can be expanded via software to cover 25.615–30.105MHz. Shopping Options for the AT-5555N II