Anytone At5555n Ii Service Menu Work ((full))

Crucially, the menu uses a model. As you turn the channel selector, the radio immediately applies the change. There is no "save" prompt; changes are written to EEPROM in real-time.

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| Parameter | Function | Typical Range | When to Adjust | | :--- | :--- | :--- | :--- | | | Reference Frequency (PLL Master Clock) | 0 to 255 | Most common fix. Adjusts the master oscillator. | | PA-H | High Power AM/FM Bias | 0-255 | Sets final transistor bias for high power. | | PA-L | Low Power AM/FM Bias | 0-255 | Sets final transistor bias for low power. | | Pc-H | SSB High Power ALC Threshold | 0-255 | Limits peak envelope power on SSB. | | Pc-L | SSB Low Power ALC Threshold | 0-255 | Limits low power SSB. | | Mod | AM Modulation Depth Limit | 0-255 | Maximum AM percentage (Factory ~95%). | | S-1 through S-9 | S-Meter Calibration | Varies | Adjusts receive signal strength reading. | anytone at5555n ii service menu work

while keeping those two buttons depressed.

The AT-5555N II uses separate digital limiters to control the maximum RF power output for each mode. Crucially, the menu uses a model

The setting controls the local oscillator offset. This ensures that when the radio shifts between receive and transmit, or switches bands, it perfectly tracks the correct frequencies without drifting or displaying off-center readouts. Advanced Modulation and Output Tuning

Service-level menus can sometimes adjust the absolute carrier power, though the AT-5555N II has a dedicated front-panel RF Power control for day-to-day use. Software Alternatives: The AnyTone PC Tool Elias pulled into the gravel lot of an

Before changing a single digit, write down every single factory value. Factory calibrations are unique to each individual radio unit; there is no "universal default" to restore if you mess up.

: Sets the constant carrier power for Frequency Modulation. Can safely be set higher (up to 45–50W), but keeping it conservative prevents overheating during long transmissions.