Adjust the parameter until the meter peaks safely around . Pushing the amplifier past this threshold generates harmonic distortion (splatter) across neighboring frequencies. Step 4: Save and Exit
What or adjustment (e.g., low audio, off-frequency) are you trying to fix? Share public link
Unintended alterations can severely impact your radio's performance. Accessing the Main Service Menu
Changing random values can brick your radio or make it illegal to transmit. Always write down the original values before changing anything. anytone at5555n ii service menu updated
Connect your radio to a 50-ohm dummy load. Enter the service menu and step through every single code. Write down every parameter name and its corresponding numerical value on a sheet of paper. Step 2: Adjusting AM Modulation Swing If you receive complaints of quiet audio on AM:
Many experienced users strongly advise that for most owners, there is no need to ever enter the service menu , as the radio works perfectly straight out of the box.
Calibrates the signal meter baseline for a weak signal. Adjust the parameter until the meter peaks safely around
Once inside the Service Menu, you will navigate a numbered list of parameters (CH-01 to CH-59). To of any menu item, simply key the microphone momentarily. To alter a value , press and hold the PTT while rotating the VFO knob up or down.
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.
Anytone has released at least one major firmware update. You can identify if your radio has the latest version by checking for the "STEP" option in the main user menu. This feature allows you to set a 5 kHz frequency step size and is a hallmark of the most current software. If your radio lacks the "STEP" menu, a firmware update is available. Share public link Unintended alterations can severely impact
Accessing the lets you recalibrate local oscillators, boost AM/FM modulation, and cure known receiver background hiss without a soldering iron. ⚠️ The Golden Rule: Back Up Your Settings First
Let’s be clear: This isn't for everyday channel changing. The service menu allows you to fine-tune the hardware. Common reasons to enter it include:
Optimization Tip : Avoid cranking these values to the maximum limit. Setting AM carrier power too high compresses your modulation swing, resulting in muffled, distorted audio. Keep the AM carrier around 10–12 Watts to allow full upward modulation swing. 2. Audio and Modulation Drive
is widely considered one of the most capable and feature-rich 10-meter mobile radios available . For both seasoned amateur radio operators and CB enthusiasts, its rugged design and VFO capabilities make it a staple in the shack.