Anytone At-5555n Ii Service Menu [new] | Works 100% |

Calibrates the Peak Envelope Power (PEP) limit for Upper and Lower Sidebands. 3. S-Meter Calibration (RX S1 / RX S9)

: Adjusts the RF Gain calibration; typically set around a default of 86. Common Adjustments & Operations

The screen will now show or a calibration parameter (e.g., rEF or PLL ). Use the CH/UP/DN knob or channel selector to scroll through parameters.

The service menu allows you to:

If you encounter problems, here are some common solutions: anytone at-5555n ii service menu

, like many advanced radio transceivers, contains a service menu used for factory alignment and calibration. This menu is intended for use by qualified technicians using specialized test equipment such as frequency counters, power meters, and signal generators. Understanding the Service Menu

Pushing the power limits too high will overheat the final transistors and introduce severe audio distortion (splatter). 3. Modulation and Deviation (MOD / DEV)

Technicians use an RF signal generator to inject a precise microvolt (

Ensure your SWR (Standing Wave Ratio) is as low as possible to protect the final transistors. Calibrates the Peak Envelope Power (PEP) limit for

Ensure the SWR (Standing Wave Ratio) is as low as possible. A well-tuned antenna is more effective for performance than "cranking up" internal power settings.

A: Almost certainly, yes. Any evidence of tampering with factory settings would be a valid reason for a manufacturer to void a warranty.

: Do not proceed unless you are fully aware of the risks and have the necessary test equipment. The community is clear on this point: "DO NOT TRY AND CHANGE THE S METER SETTINGS WITHOUT A SIGNAL GENERATOR". Even with the correct key sequence, you are working with the radio's core calibration.

A 50-ohm non-inductive dummy load rated for at least 100 watts. Never transmit into an open antenna while adjusting service settings. Common Adjustments & Operations The screen will now

If the radio requires alignment, contacting a certified radio technician ensures the device remains reliable and compliant with local regulations.

Once adjustments are complete, press the FUNC or MEM button (depending on the exact firmware revision) to write the new data to the EEPROM, or simply power the radio off and back on to finalize standard parameters. Key Service Menu Parameters Explained

To enter the service menu on the Anytone AT-5555N II, follow these steps:

While exact parameters can shift across manufacturing batches, the core alignment groups include: 1. Frequency Calibration (REF / FREQ)

Incorrectly adjusting voltages or power limits can overheat the final transistors, distort your audio, or damage the radio permanently. Proceed at your own risk. How to Access the Anytone AT-5555N II Service Menu