Anytone At-5555n Ii Service Menu Now

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: A separate "Background Function Menu" for user settings (like Beep, TOT, or SWR protection) is accessed by holding the MENU button for 2 seconds during normal operation.

If you are adjusting SSB PEP or FM power, keep your transmissions short. The internal heat sinks are not rated for continuous, maximum-power engineering tones. Troubleshooting Common Issues

The method differs slightly depending on the specific firmware version of your radio, but the following method is standard for the N-II series: anytone at-5555n ii service menu

Connect the radio's RF output through a dummy load to a calibrated frequency counter.

: A common use for this menu is to address high "noise floor" readings (where the S-meter shows S5–S7 with no signal). Changing CH-52 (RFG) from its default (often ~86) to a higher value like has been reported to resolve this. Adjustment Method : To change a value, press and hold the PTT button while rotating the Factory Reset

The service menu of the AnyTone AT-5555N II offers advanced users and technicians the ability to customize and fine-tune the performance of their radio. For instance, adjusting the transmitter power can be useful in optimizing the radio's range and signal quality in different operational environments. Similarly, tweaking the squelch settings can help in reducing background noise and interference, thereby improving the overall communication clarity.

Operational Analysis and Technical Procedures: Accessing and Interpreting the Service Menu of the AnyTone AT-5555N II Let me know how you'd like to

Sets the low power dead key (typically adjusted to 1-2 watts). RFG RF Gain calibration; default value is usually around 86. bfC BFO Adjustment Adjusts the 10.24MHz BFO frequency. loC LO Offset

service menu requires technical knowledge. Improper adjustment can significantly degrade performance, cause excessive power consumption, or permanently damage the radio. The service menu does not have a "factory reset" function for these specific settings. RECORD ALL DEFAULT VALUES BEFORE MAKING CHANGES. How to Access the AnyTone AT-5555N II Service Menu There are multiple "hidden" layers in the AT-5555N II , often depending on the firmware version. Method 1: The Main Boot-up Service Menu Turn the radio .

Once the Service Menu is active, the standard operational buttons are remapped to navigation functions:

The provides advanced radio operators and technicians with direct control over internal alignments, power outputs, frequency offsets, and modulation parameters directly from the front panel. It bypasses standard background programming software, allowing real-time calibration of Single Sideband (SSB), Amplitude Modulation (AM), and Frequency Modulation (FM) modes. If you are adjusting SSB PEP or FM

Compare the service menu to the .

Absorbs the transmitted RF power safely without broadcasting a signal over the air. Measures exact PEP and carrier power levels. Frequency Counter

You should now see a new menu labeled or similar engineering screens instead of the normal channel frequency.