Anytone At5555n Ii Service Menu Work Access

Accessing this menu requires a specific sequence that is not found in the standard manual. Preparation

If your AnyTone AT-5555N II requires alignment beyond simple frequency drift corrections, or if you lack the necessary test gear, it is highly recommended to send the unit to a certified radio technician with an RF service monitor. To help you get your radio perfectly aligned, let me know:

Set the modulation index for AM and the deviation for FM to ensure crisp, legal audio transmission. anytone at5555n ii service menu work

Correct minor frequency drifts in Single Sideband (SSB) mode by adjusting the reference oscillator value.

While keeping those two keys firmly held, turn the volume knob clockwise to power the unit up. Accessing this menu requires a specific sequence that

If done correctly, the display will switch to show or "FACTORY" , indicating you have successfully unlocked the service mode. Navigating and Changing Parameters

Once in the service menu, users can adjust a variety of parameters, including: Correct minor frequency drifts in Single Sideband (SSB)

Press the FUNC key or power down the radio to save the changes to the EEPROM non-volatile memory. Critical Safety Warning: Look Before You Leap

. It looks great, but something is off—perhaps the S-meter is pegged, or the frequency is slightly "drifting" on Sideband (SSB). You know there's a deeper layer of control beyond the standard Function Menu .

Making changes to the service menu is a serious step. The radio does not reset these parameters to factory defaults through its standard user menu reset, meaning any changes you make are permanent unless you can find and manually revert them.

: Hook the radio up to a dummy load and a high-precision frequency counter. Key the mic on a known frequency (e.g., 28.000 MHz) and adjust this value until the counter reads exactly 28.0000 MHz. 2. Carrier Balance (C-BAL)