If the button combination fails:
The display should enter the technical alignment mode, often showing "bF" or frequency parameters. 2. Navigating the Service Menu
Any testing involving transmission should be done into a dummy load to prevent unnecessary interference and protect the final transistors.
To enter the service menu on the Anytone AT-5555N II, follow these steps:
: Controls the local oscillator offset. Adjust this first if the radio is off-frequency on USB or LSB.
Adjusts the reference frequency of the 10.24 MHz Beat Frequency Oscillator (BFO). Center Frequency
The AT-5555N II is typically factory-set for 28.000–29.700 MHz. Users often seek to expand frequency coverage.
Note: Your stock values may vary. Write them down before changing anything!
Once active, navigating through parameters is achieved by pressing the button or rotating the primary channel selector ( CH ). The service environment is broken down into critical alignment fields: Parameter Code Description Functionality bfC BFO Coarse Alignment
If the button combination fails:
The display should enter the technical alignment mode, often showing "bF" or frequency parameters. 2. Navigating the Service Menu
Any testing involving transmission should be done into a dummy load to prevent unnecessary interference and protect the final transistors.
To enter the service menu on the Anytone AT-5555N II, follow these steps:
: Controls the local oscillator offset. Adjust this first if the radio is off-frequency on USB or LSB.
Adjusts the reference frequency of the 10.24 MHz Beat Frequency Oscillator (BFO). Center Frequency
The AT-5555N II is typically factory-set for 28.000–29.700 MHz. Users often seek to expand frequency coverage.
Note: Your stock values may vary. Write them down before changing anything!
Once active, navigating through parameters is achieved by pressing the button or rotating the primary channel selector ( CH ). The service environment is broken down into critical alignment fields: Parameter Code Description Functionality bfC BFO Coarse Alignment