Opens up internal audio limiting for punchier AM swing and clearer SSB performance.
To ensure this guide stays accurate for your specific setup, tell me: What is currently installed on your radio?
: Hold the keys until the LCD screen displays the service menu interface (typically indicated by a firmware version index or a parameter label like F01 or BIAS ). anytone at5555n ii service menu updated
To enter the hidden service menu, follow this specific power-on sequence: Turn off the radio.
Many units leave the factory set conservatively around 31 . Operators looking for wider audio response tweak the internal modulation parameters up to a maximum cap of 63 . 3. SSB Frequency Offset Fine Tuning ( bfC , loC , fr0 - fr9 ) Opens up internal audio limiting for punchier AM
✅ Send to a qualified CB/ham radio technician with a service monitor ✅ Contact AnyTone/Retevis support for official firmware or alignment software (some models use PC software via USB) ✅ Check if your radio just needs a (usually via menu option or holding two buttons on power-up)
: Use the Channel Selector knob to cycle through the menu items (typically up to 53+ parameters). To enter the hidden service menu, follow this
What (like a wattmeter or dummy load) do you have available?
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.
Adjusts the continuous carrier power for FM. It is usually set to roughly 30–40 watts. Avoid pushing this past factory specs to prevent overheating the finals.