Anytone At-5555n Ii Service Menu -

Sets the maximum audio clipping limit for FM deviation (typically locked to 2.5 kHz or 5.0 kHz maximum) and adjusts AM/SSB microphone pre-amplifier gain ceilings to prevent over-modulation. Best Practices for Successful Alignment

You should now see a new menu labeled or similar engineering screens instead of the normal channel frequency.

Press the FUNC key or cycle the power to save your new settings to the radio's EEPROM memory. Key Service Menu Parameters Explained anytone at-5555n ii service menu

Press and hold the button and MODE button simultaneously. Turn the radio ON while continuing to hold those buttons.

Never perform service menu adjustments with an antenna connected. Transmitting sustained tuning carriers can create high SWR reflections and cause illegal localized interference. Use a high-quality, 50-ohm dry dummy load rated for at least 100 Watts. Sets the maximum audio clipping limit for FM

While holding both controls down, turn on the radio using the volume/power knob.

However, accessing and modifying settings in the service menu also carries risks. Unauthorized or improper changes can lead to compliance issues with regulatory standards, void warranties, or even damage the radio. Therefore, it is recommended that only experienced users or certified technicians attempt to access and modify the service menu settings. Key Service Menu Parameters Explained Press and hold

To prevent broadcasting interference during testing.

Connect a precise frequency counter, set the radio to USB, and adjust the relevant parameter until the 1kHz tone is accurate. B. Fine Tuning Settings (fr0 - fr9)

Turn the radio OFF to save your new settings and exit the service menu. Key Service Menu Parameters Explained

Unlike the standard menu, which is accessed by pressing the Menu knob, the service menu requires a specific button combination during power-up. Turn the radio .