Anytone At-5555n Ii Service Menu ❲Mobile PREMIUM❳

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.

Here are some common settings and options you may find in the service menu:

To keep a feature-rich radio like the AT-5555N II performing optimally, it is recommended to focus on external optimizations:

Within those 2 seconds, release the buttons and immediately press the following buttons in sequence: , NB , SCAN , MEM , EMG .

Transmitters are calibrated to meet specific legal requirements regarding frequency stability and bandwidth. Improper adjustments can cause the radio to operate outside of legal specifications, potentially causing interference with other services. anytone at-5555n ii service menu

While AnyTone occasionally updates firmware revisions—which can alter the exact naming convention or index order of the engineering menu—the AT-5555N II service menu primarily controls these critical alignments: 1. Frequency Calibration (Reference Oscillator)

of powering on, release those buttons and quickly press the following sequence in order: (Roger Beep) (Noise Blanker) (Emergency) Important Considerations Calibration Settings

Before changing a single number, grab a pen and paper. Scroll through every single menu item and write down the factory-set hexadecimal or digital value. If you mess up, you can manually restore the radio to its factory baseline.

: While holding these buttons, turn the radio on. All LCD segments will light up for roughly two seconds. Verification Improper adjustments can cause the radio to operate

: To change a value, press and hold the PTT (key the mic) while rotating the Channel Selector knob.

Once you have adjusted a setting, press and hold the FUNC key or power the radio off and back on. This writes the new values to the EEPROM memory. Key Service Menu Parameters Explained

The settings are often mode-specific (AM, FM, USB, LSB). Use the [MODE] button to switch to the desired mode before adjusting specific parameters.

A: No, there is no official service manual for the AT-5555N II that is publicly available. The information that exists has been collated by users on forums. Scroll through every single menu item and write

Many frequency-related settings (like fr0 ) should only be adjusted while using a high-precision frequency counter or signal generator. Anytone 5555n Ii Service Menu - Google Groups

If your radio is slightly off-frequency, especially on SSB (USB/LSB), this is where you fix it.

You must write down every original value for all 50+ settings before making any adjustments.

Once inside: