The service menu (also called "hidden menu" or "alignment mode") of the AnyTone AT-5555N II is not intended for end users. Entering this menu and changing values can:
Only experienced technicians with proper test equipment (frequency counter, oscilloscope, power meter, modulation analyzer) should access service mode. anytone at5555n ii service menu updated
To save changes and exit the Service Menu: The service menu (also called "hidden menu" or
Users on modern firmware have reported specific quirks. Here is how the updated service menu solves them: To save changes and exit the Service Menu:
Problem: "My AM carrier is too high (10 watts), but the radio is set to low power." Solution: Go to P-07 (High Power Scale). Reduce the value from 120 to 85. This digitally reduces the drive voltage to the RD16HHF1 finals. Do not exceed 120.
Problem: "The S-meter shows S9, but the signal is actually S5." Solution: Go to P-09. Key a known S9 signal (or use a signal generator at -73dBm). Adjust the value until the meter reads S9.
Problem: "My SSB audio sounds distorted on the air." Solution: The updated firmware adds ALC clamping. Go to P-05 (SSB ALC). Reduce from 95 to 85. This cleans up sideband audio significantly.