Allows tuning the output power for different modes to ensure the radio operates at its maximum rated wattage (60W+ PEP on SSB) or to reduce it for driving an amplifier.
Adjust the S_METER parameters to calibrate when the first bar appears, and where the meter peaks. Troubleshooting and "Reset" Procedures
This sequence should unlock the service menu, allowing access to calibration parameters. Understanding the Service Menu Functions The service menu on the AT-5555N II
Technicians use this menu to align the radio digitally without opening the chassis to turn physical tuning coils or potentiometers. Critical Safety Warning Before You Begin anytone at5555n ii service menu work
while powering on, then use the channel selector to switch between "BAND 1" and "BAND 2" (Export Mode). Google Groups Important Safety Warning write down your original factory values
. It looks great, but something is off—perhaps the S-meter is pegged, or the frequency is slightly "drifting" on Sideband (SSB). You know there's a deeper layer of control beyond the standard Function Menu .
Release the buttons once the LCD display changes to show a service menu item code (typically formatted as a shorthand category and a digital value). To navigate the menu: Allows tuning the output power for different modes
Fine-tuning the modulation levels to prevent over-modulation or distortion, particularly when using aftermarket microphones.
With these details, I can provide more targeted steps for your exact setup.
If the key combination fails, ensure your firmware is not locked. Some regional factory firmware locks out service menu access. In these cases, the radio must be unlocked via the PC programming software and a compatible USB data cable before the hardware button combination will register. To help tailor any further advice, let me know: Understanding the Service Menu Functions The service menu
You will find settings often labeled PO_A (AM), PO_F (FM), PO_S (SSB).
Achieve 40W carrier with 90-95% positive peak modulation.
Release the keys once the LCD screen displays a service interface, often indicated by code labels like "F01" or raw hexadecimal tuning values.