Anytone At5555n Ii Service Menu Work -
: Within 2 seconds of the display lighting up, release the first two buttons and quickly press the following buttons in order: RB , NB , SCAN , MEM , and EMG .
: Significant changes to BFO or frequency alignment should ideally be done with a frequency counter or signal generator to avoid "bricking" the radio's performance. anytone at5555n ii service menu work
Local stations are S-9 on your friend’s radio, but S-3 on yours. The audio is quiet. : Within 2 seconds of the display lighting
| Menu Item | Function | Typical Range | Why You Need It | | :--- | :--- | :--- | :--- | | | VCO Lock Voltage (Band A) | 0-255 | Diagnose Tx/Rx dropouts. Should be stable. | | P-07 | AM Carrier (Deadkey) Power | 0-255 | Most common adjustment. Raise/lower DK wattage. | | P-08 | AM High Power (Full modulation) | 0-255 | Sets max AM PEP. Balance with P-07 for 1:4 ratio. | | P-09 | LSB Transmit Power | 0-255 | Adjust SSB output on Lower Sideband. | | P-10 | USB Transmit Power | 0-255 | Adjust SSB output on Upper Sideband. | | P-11 | FM Transmit Power | 0-255 | Sets FM carrier power. | | P-15 | S-Meter Zero (Squelch threshold) | 0-255 | Calibrates S-meter to show "S-0" correctly. | | P-16 | S-Meter Full Scale (S-9 + 60dB) | 0-255 | Sets high end of signal meter. | | P-32 | PLL Reference Frequency (Master Oscillator) | 0-255 | The holy grail. Corrects frequency drift on TX/RX. | | P-45 | AM Modulation Depth | 0-255 | Sets percentage of modulation (avoid 100%+ to retain clarity). | | P-58 | Mic Gain Pre-Amp (SSB/AM) | 0-255 | Boosts internal mic preamp if external audio is weak. | The audio is quiet
Accessing the service menu on the Anytone AT-5555N II allows for deep-level alignment of internal parameters like power output, modulation swing, and local oscillator offsets. Unlike the standard user menu, these settings are factory-calibrated and do not reset even if you perform a global radio reset. Accessing the Service Menu
: There is no master reset for the service menu. Performing a standard radio reset (holding FUNC + SCAN) will not restore these alignment values to factory defaults.
