Anytone At5555n Ii Service Menu Updated -

Now that you have the service menu map, go forth and align your AnyTone to perform better than the day it left the factory. Disclaimer: This article is for informational and educational purposes only. Unauthorized modification of radio transmitters may violate FCC regulations in the United States or local laws in your jurisdiction. Always operate within legal band limits and power restrictions.

| Parameter | Function | Default Value | What it controls | | :--- | :--- | :--- | :--- | | | VCO Lock Voltage | 2.5 – 4.0V | Do not adjust unless VCO unlocks. | | P-02 | PLL Reference Freq | 0 | Fine frequency calibration (TX/RX offset). | | P-03 | AM Carrier Level | 15 – 25 | Adjusts dead-key carrier for AM mode. | | P-04 | AM Modulation Limit | 90 – 95 | Max percentage of AM modulation. | | P-05 | SSB ALC Max | 80 – 95 | Prevents splatter on sideband. | | P-06 | FM Deviation | 20 – 30 | Sets narrow/wide FM shift. | | P-07 | High Power Scale | 100 – 120 | Digital power amp gain (MOSFET drive). | | P-08 | Low Power Scale | 20 – 40 | Minimum power output floor. | | P-09 | S-Meter Zero | 0 | Calibrates S9 signal reading. | | P-10 | Squelch Threshold | 5 – 15 | Minimum open point for SQL knob. |

Document your original settings before changing anything. Use a calibrated wattmeter, frequency counter, and dummy load. And finally—don’t transmit into a mismatched load while tweaking P-07. You’ve been warned. anytone at5555n ii service menu updated

A: If the VCO unlocks, you will hear clicking. Turn the radio off. Open the case and look for the two VCO trimmer caps (TC1/TC2). If you didn't touch those, re-enter the service menu blindly (you may need a strong signal in the room to hear beeps) and set P-01 back to 2.5. Final Verdict: A Technician's Dream The AnyTone AT5555N II is a marvel of modern radio design, but the updated service menu transforms it from a consumer appliance into a technician's bench radio. Whether you are compensating for temperature drift or tuning your modulation for pristine broadcast audio, the hidden menu offers granular control that rivals radios costing three times as much.

Parameters P-11 through P-15 are now active, controlling AGC attack/release times and display brightness curves. The "Updated" Procedure for Frequency Calibration The most common reason to use the service menu is to correct frequency drift or align the radio to a frequency counter. Now that you have the service menu map,

A: No. A standard factory reset (FUNC+INFO on power up) only resets user settings (channel memories, mic gain, RF power). The service menu parameters are stored in a protected EEPROM sector and remain untouched. You must manually revert changes.

"My AM carrier is too high (10 watts), but the radio is set to low power." Solution: Go to P-07 (High Power Scale). Reduce the value from 120 to 85. This digitally reduces the drive voltage to the RD16HHF1 finals. Do not exceed 120. Always operate within legal band limits and power

If you own an AnyTone AT5555N II , you already know you possess one of the most powerful, feature-packed AM/FM/SSB mobile radios on the 10-meter and 12-meter bands (often used as a "10-meter" export radio). But beneath the sleek front panel and multi-colored display lies a secret control center: the Service Menu .