Anytone At5555n Ii Service Menu Work

The most common reason for entering the service menu is drifting off frequency. A fellow ham says, "You are 60 Hz low on 27.555 MHz."

| Setting | Function | Typical Value | Notes | | :--- | :--- | :--- | :--- | | | RF Gain Calibration | 86 | Adjusts receiver sensitivity. Do not adjust without a signal generator. Changing this value will also affect S-meter calibration . | | CH-51 AF RS3 | S-Meter Level Calibration (S3) | Varies | Factory calibrated to show S3 at a specific input level (-93 dBm). | | CH-50 AF RS1 | S-Meter Level Calibration (S1) | Varies | Factory calibrated to show S1 at a specific input level (-103 dBm). | | CH-40 to CH-49 | Various S-Meter Calibration Points | Varies | These settings fine-tune the S-meter readings at different signal strengths. | anytone at5555n ii service menu work

This "Main Boot-up Service Menu" is distinct from the standard user settings menu and is used for internal hardware alignments, such as power output and frequency fine-tuning. The most common reason for entering the service

Create a spreadsheet or use a notebook to document the factory default value for every single item you change. Changing this value will also affect S-meter calibration