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Tom needed to tweak his Anytone AT-5555N II handheld for better performance on a local repeater. He wasn’t a radio tech, but he wanted a safe, reversible change — nothing that would void warranty or break the radio.
This calibrates the internal Standing Wave Ratio meter. It ensures the radio accurately reads reflected power to protect itself from antenna mismatches. Essential Tools for Service Menu Adjustments
If things go wrong, a full factory reset may be necessary. Hold [FUNC] and [SCAN] while turning the radio on.
Most stable method:
Fine-tunes the percentage of AM modulation. Setting this too high causes clipping; setting it too low results in quiet, weak audio. 4. S-Meter Calibration (RX / SQ)
The AnyTone AT-5555N II is a powerful 10-meter radio, but its deepest configuration options are tucked away in a hidden service menu . While the standard background function menu
Press and hold the (Function) button, the [RB] (Roger Beep) button, the [NB] (Noise Blanker) button, and the [DW] (Dual Watch) button simultaneously. Turn the radio ON while holding these buttons. anytone at-5555n ii service menu
Release the buttons once the display changes. The screen will indicate that you have entered the alignment/service mode (often displaying a firmware version or a specific test parameter code like "FRQ" or "POW"). Navigating the Menu
Ensure the transceiver is completely turned off using the volume/power knob.
Before changing a single number, scroll through the entire service menu and write down every parameter name and its factory default value. If you make a mistake, you can manually revert it. Tom needed to tweak his Anytone AT-5555N II
A: Yes, it is possible. Changing critical parameters without the proper test equipment and knowledge can result in a radio that is non-functional.
Incorrect adjustments can cause severe frequency drift, destroy your final transistors due to over-current, blow the voltage regulators, or cause your radio to transmit a distorted, splattering signal that violates spectral purity regulations.
Calibrates the digital signal strength meter on the LCD display. It ensures the radio accurately reads reflected power
Tom needed to tweak his Anytone AT-5555N II handheld for better performance on a local repeater. He wasn’t a radio tech, but he wanted a safe, reversible change — nothing that would void warranty or break the radio.
This calibrates the internal Standing Wave Ratio meter. It ensures the radio accurately reads reflected power to protect itself from antenna mismatches. Essential Tools for Service Menu Adjustments
If things go wrong, a full factory reset may be necessary. Hold [FUNC] and [SCAN] while turning the radio on.
Most stable method:
Fine-tunes the percentage of AM modulation. Setting this too high causes clipping; setting it too low results in quiet, weak audio. 4. S-Meter Calibration (RX / SQ)
The AnyTone AT-5555N II is a powerful 10-meter radio, but its deepest configuration options are tucked away in a hidden service menu . While the standard background function menu
Press and hold the (Function) button, the [RB] (Roger Beep) button, the [NB] (Noise Blanker) button, and the [DW] (Dual Watch) button simultaneously. Turn the radio ON while holding these buttons.
Release the buttons once the display changes. The screen will indicate that you have entered the alignment/service mode (often displaying a firmware version or a specific test parameter code like "FRQ" or "POW"). Navigating the Menu
Ensure the transceiver is completely turned off using the volume/power knob.
Before changing a single number, scroll through the entire service menu and write down every parameter name and its factory default value. If you make a mistake, you can manually revert it.
A: Yes, it is possible. Changing critical parameters without the proper test equipment and knowledge can result in a radio that is non-functional.
Incorrect adjustments can cause severe frequency drift, destroy your final transistors due to over-current, blow the voltage regulators, or cause your radio to transmit a distorted, splattering signal that violates spectral purity regulations.
Calibrates the digital signal strength meter on the LCD display.
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