Aligning the reference oscillator to ensure the radio transmits and receives on the correct frequency.
Once inside, the navigation logic changes from standard operation:
If the radio requires frequency alignment, it is best to consult a licensed radio technician who possesses the necessary service monitors and alignment tools. Technical Software Options For management of user-accessible features, the Anytone AT-5555N II
Ensures the radio transmits and receives exactly on-frequency (especially critical for SSB modes). anytone at-5555n ii service menu
Sets the carrier power for AM (usually kept lower than FM to allow room for modulation swing).
Controls the local oscillator offset for frequency centering.
| Parameter Range | Typical Function | Adjustment and Risk | | :--- | :--- | :--- | | (S1-S12) | Power Output by Mode These parameters control the radio's power output for each mode (AM, FM, SSB). | Adjusts final transistor biasing and overall power levels in different modes. Risk: Incorrect settings can distort the signal (splatter), overdrive amplifiers, cause harmful interference, and potentially damage the radio's final amplifier transistors. | | Items 40-52 (CH40-CH52) | S-Meter Calibration (e.g., AF RS1, UL RS1, RFG) These control the accuracy of the received signal strength indicator (S-meter) across different levels (S1, S3, S5, S9, etc.) and frequencies. | Calibrates the analog-to-digital conversion for the S-meter. Risk: Requires a calibrated, precise RF signal generator. Without one, changing these will permanently ruin your S-meter accuracy, making it impossible to correctly assess signal strength. | | Items 53-59 | Frequency / BFO / VCO Calibration These settings adjust the Master Oscillator, Beat Frequency Oscillator (BFO), and Voltage-Controlled Oscillator (VCO) to ensure transmit and receive frequencies are accurate across the entire band. | Tunes the PLL and BFO for proper frequency synthesis and USB/LSB demodulation. Risk: Requires an accurate, calibrated frequency counter. Incorrect adjustments will result in your transmit frequency being off, making you impossible to tune in on SSB, and your receive audio will sound garbled as the BFO will be at the wrong pitch. | Aligning the reference oscillator to ensure the radio
Adjusts the 10.24MHz Beat Frequency Oscillator (BFO).
Before you change a single digit, write down every default factory value. Every individual radio leaves the factory with unique tuning values optimized for its specific silicon chips. There is no "universal default" reset to fix a scrambled service menu.
To enter the service menu on the Anytone AT-5555N II, follow these steps: Sets the carrier power for AM (usually kept
A: Yes, it is possible. Changing critical parameters without the proper test equipment and knowledge can result in a radio that is non-functional.
The AnyTone AT-5555N II has cemented its reputation as a powerhouse in the CB and 10-meter amateur radio community. Known for its robust build, excellent receiver sensitivity, and impressive power output straight out of the box, it is a favorite for DX enthusiasts and local communicators alike.
While most of the 59+ settings are for internal alignment, users commonly use the following for performance tweaks: Common Usage / Tip AM High Power Set the maximum "dead key" for AM high power. 17 AM Low Power
A common question is whether the radio needs alignment out of the box. The consensus is a clear "no." From almost every source reporting on these, they are "dead nuts on" and ready to go.