Anytone At5555n Ii Service Menu Work 100%

Pc-H (High power SSB limit)

Entering the service menu and changing values without proper equipment (frequency counter, oscilloscope, RF power meter, and dummy load) can permanently detune your radio, making it unusable. Proceed with caution. anytone at5555n ii service menu work

Disclaimer: Modifying your radio may void the warranty and violate local transmission laws (especially Part 95 for CB use). Always operate within your license privileges. Pc-H (High power SSB limit) Entering the service

If you don't own a frequency counter or a Bird wattmeter, do not open the service menu. Instead, send the radio to a reputable tech. The cost of calibration ($50-$80) is far less than the cost of a new AT-5555N II ($300+). Always operate within your license privileges

| 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. | The Most Important Parameter: rEF (Frequency Calibration) 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."

Achieve 40W carrier with 90-95% positive peak modulation.

However, if you are a ham with a bench, the service menu turns the AT-5555N II from a "good off-the-shelf radio" into a . Conclusion The anytone at5555n ii service menu work is not a magic factory reset—it is a sophisticated calibration toolkit. By understanding parameters like rEF , PA-H , and Pc-H , you can restore drifting radios, optimize modulation for contesting, and ensure your signal is clean and on-frequency.