At5555n Ii Service Menu Updated - Anytone

: Always WRITE DOWN every original value before changing it. There is no software reset for these specific alignment values; if you change them without a backup, you cannot easily restore factory calibration. Key Service Menu Items and Fixes

While the radio lacks official documentation for every item, community testing has identified several critical settings for the AT-5555N II: Description AM High Power Adjusts the peak dead key for AM high power mode. #17 AM Low Power anytone at5555n ii service menu updated

Adjusts the low power dead key (often set to 2 watts for amp driving). Modulation Some users set these to "0" to improve AM modulation swing. #52 (RFG) RF Gain Fix : Always WRITE DOWN every original value before changing it

Used to resolve "S5-S7 noise" issues. Increasing this value (e.g., from 86 to 105) can quiet a noisy receiver. #17 AM Low Power Adjusts the low power

: To see the current value of a setting, press the PTT (Push-To-Talk) button on the microphone.

Accessing the service mode requires a specific sequence of button presses during the power-on cycle.