The Anytone AT-5555N II service menu is a powerful, hidden feature set used primarily for internal alignment, power adjustments, and signal fine-tuning. Unlike the standard user menu, this interface contains roughly 59 individual settings that directly control the radio's hardware parameters. Accessing it requires a precise power-on sequence and specific button combinations. How to Access the Anytone AT-5555N II Service Menu
Here are some of the key settings and adjustments you can make in the service menu:
: Turn the radio off. Ensure all switches are in the upper position except for NB/ANL, which should be set to Activation : Press and hold both the buttons simultaneously while turning the radio on. anytone at5555n ii service menu work
Whether you are correcting a factory frequency error, fine-tuning your modulation for a competition audio setup, or matching your deadkey to a high-drive amplifier, the service menu is your surgical instrument.
When should you use the service menu? Only in these specific scenarios: The Anytone AT-5555N II service menu is a
Here is the essential warning: Do not enter the service menu unless you have a calibrated oscilloscope, a frequency counter accurate to 1ppm, a 50-ohm dummy load, and an RF power meter. Unlike the service menu of a Yaesu or Icom, the AT-5555N II’s menu lacks a "Factory Reset" option. If you mistakenly set the PLL reference to an extreme value, the radio will not lock onto any frequency. If you max out the ALC, your transmit signal will become a distorted, splattering mess.
Controls BFO frequency, local oscillator offset, and fine-tuning limits. Other Useful Hidden Modes How to Access the Anytone AT-5555N II Service
Verification: If successful, the screen should display "FM" (Factory Menu) or start showing menu numbered items (e.g., #01). Critical Warnings
If you own an Anytone AT-5555N II, you already know it is a powerhouse in the world of 10-meter and 12-meter amateur radio, as well as a favorite among freebanders. This radio is celebrated for its robust build, excellent receiver sensitivity, and the famous "N2" firmware improvements over its predecessor.
