Anytone At-5555n Ii Service Menu

Adjusting this can sometimes help with the "receive noise" common on these units. Frequency Alignment

The AnyTone AT-5555N II features a powerful but undocumented used for factory-level alignments, including power output limits and frequency fine-tuning. ⚠️ Critical Warning anytone at-5555n ii service menu

Do not attempt to turn a 60-watt radio into an 80-watt radio. The gains are visually unnoticeable on the receiving end (less than 1 dB), but the heat generation increases exponentially. Monitor Temperature Adjusting this can sometimes help with the "receive

However, accessing and modifying settings in the service menu also carries risks. Unauthorized or improper changes can lead to compliance issues with regulatory standards, void warranties, or even damage the radio. Therefore, it is recommended that only experienced users or certified technicians attempt to access and modify the service menu settings. The gains are visually unnoticeable on the receiving

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Press and hold the (Function) button, the [RB] (Roger Beep) button, the [NB] (Noise Blanker) button, and the [DW] (Dual Watch) button simultaneously. Turn the radio ON while holding these buttons.

Ensure your bench power supply is delivering a stable 13.8V DC at a minimum of 15–20 Amps. Voltage drops during high-power testing will result in inaccurate calibration values.