Controls voltage across varicaps for precise frequency steps (.00, .04, .05, .09). Align these after any BFO change [6]. Local Oscillator Offset
The service menu contains several technical alignment settings. Note that these may vary slightly depending on your firmware version (e.g., v3.0). : Adjusts the frequency of the 10.24MHz
Use the or specific menu keys (depending on firmware version) to alter the value of the selected parameter.
Adjusts the depth of the AM voice modulation. Setting this too high results in clipped, distorted audio; setting it too low yields quiet transmission.
In addition to the physical front-panel service menu, many operators prefer to use a PC and the official AnyTone programming software Software For Anytone AT-5555N II and quick run. . This approach is generally safer and vastly easier for users than pushing button combinations. anytone at5555n ii service menu updated
? Proceed with caution! There is for the parameters in this menu once you change them. Here is the updated step-by-step to get in safely:
Write down the original factory value of every setting before you change it. There is no "factory reset" button that restores default service menu alignments.
The updated firmware versions of the AT-5555N II utilize a specific button combination upon boot-up to prevent accidental entry.
: Adjusting service menu values without a high-quality frequency counter or power meter can permanently degrade your radio's performance. Google Groups Are you looking to re-align the frequency specifically, or are you trying to increase your modulation for better audio? Anytone 5555n Ii Service Menu - Google Groups Controls voltage across varicaps for precise frequency steps
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:
Always adjust power levels while connected to a 50-ohm dummy load to avoid reflecting power back into the finals. 3. Modulation and Deviation ( DEV / MIC )
Note that performing a total firmware flash using the PC software can sometimes reset alignment parameters to a default baseline. If you update your firmware, you may need to manually re-enter your recorded service menu values to maintain performance.
Keep the buttons held down until the LCD screen flashes and displays the service menu interface (typically indicating a parameter code like F01 or a specific alignment label). Note that these may vary slightly depending on
On some updated mainboards, the entry method has changed to prevent accidental entry:
But hidden beneath that glossy interface lies a secret weapon: .
Run the radio on a stable 13.8V DC power supply capable of delivering at least 10–12 Amps. How to Access the Updated Service Menu
To save your changes and exit, turn the radio and then back ON . Service Menu Parameter Breakdown