Note: Your stock values may vary. Write them down before changing anything!
: If you forgot to write down your original numbers, you will need to find an identical revision radio and copy its service values, or send the unit to an authorized alignment center.
Instead of accessing the service menu, most users can optimize their AnyTone AT-5555N II experience through standard operations: anytone at-5555n ii service menu
Press and hold the button and the CLARIFIER knob simultaneously. While holding them down, turn the radio ON .
Accessing this menu allows you to fine-tune the radio's transceiver performance, adjust power levels, and calibrate meters without opening the physical casing. Disclaimer and Safety Warning Note: Your stock values may vary
Unlike the standard user menu (which controls basic functions like beep volume, squelch types, and screen color), the service menu interacts directly with the radio's firmware calibration layers.
Adjusts the 10.24MHz Beat Frequency Oscillator (BFO). Instead of accessing the service menu, most users
This adjusts the 10.24MHz BFO, which is critical for carrier suppression and clarifying audio on USB/LSB.
The AT-5555N II is typically factory-set for 28.000–29.700 MHz. Users often seek to expand frequency coverage.
Press and hold the and [MODE] buttons simultaneously while turning the radio ON . Release the buttons once all LCD segments appear.