Anytone At5555n Ii Service Menu Work 【Direct Link】

Mastering the Anytone AT-5555N II: A Deep Dive into the Service Menu

For the dedicated CB and 10-meter radio enthusiast, the Anytone AT-5555N II represents a pinnacle of modern design. It combines the classic look of a vintage retro-style rig with cutting-edge DSP (Digital Signal Processing) and frequency stability. However, like all high-performance export radios, its true potential—and occasionally its necessary fixes—are locked behind a digital vault known as the Service Menu.

  1. Enter Service Menu -> P-15 (S-Meter Zero).
  2. Remove the antenna. Connect a dummy load. The meter should read "0."
  3. If it reads "1" or "2", adjust P-15 down until it reads zero.
  4. Next, inject a known signal (e.g., an RF signal generator set to S-9 at -73dBm).
  5. Navigate to P-16 (S-Meter Full). Adjust so the meter reads exactly S-9.
  6. For audio volume, check P-58 (Mic Preamp) on receive? No – that’s for TX. For receive audio gain, check P-50 (AF Gain threshold). Increase this carefully to avoid hissing.

Viewing Values: To see the current stored value for a selected item, press and hold the PTT (Push-to-Talk) button on the microphone. anytone at5555n ii service menu work

  1. Enter service menu. Find PA-H .
  2. Set the radio to AM mode, High power.
  3. Key the mic with no audio. Adjust PA-H until your wattmeter reads exactly 10-15W carrier (for 40W PEP target). Note: Do not exceed 40W carrier, or you will blow the final transistor.
  4. Release the key. Now find Mod .
  5. Speak an "AHHHH" into the mic loudly (or use a 1kHz tone generator app on your phone pressed to the mic).
  6. Watch your wattmeter's PEP needle or your scope. Increase Mod until you see the PEP hit 40W without flattening the tops of the waveform.
  7. Typical safe value: Mod between 180 and 210.
  • Re-key and check. Aim for ±10 Hz accuracy.
  • Pro Tip: Write down the DEFAULT P-32 value first. Example: If default is 128 and you moved to 132 to correct +200Hz, memorize that.
    1. Turn the radio OFF.
    2. Press and hold the FUNC button.
    3. While holding FUNC, turn the radio ON.
    4. Release the FUNC button. The display will show a code (usually ending in -- or a number).

    If you make a mistake, you can usually perform a full reset by holding while powering on and selecting "RES". Display Toggle: Short pressing switches between frequency and channel display modes. Offset Function: Long pressing (2 seconds) enters the offset (REP) menu for repeater work. device.report Mastering the Anytone AT-5555N II: A Deep Dive