To dim or adjust the transmit power of a MikroTik radio, you can follow these basic steps in the MikroTik configuration interface, using WinBox or the command line.

This is useful for complying with local regulations, avoiding interference, or simply improving overall network performance by minimizing noise.

Using WinBox:

1. Connect to your MikroTik device: Open WinBox and connect to your MikroTik device by entering the IP address, username and password.
2. Navigate to Wireless Settings:
   • Go to the “Wireless” tab found in the list of interfaces on the left of the WinBox window.
   • Select the wireless interface whose transmission power you want to adjust.
3. Adjust the Transmission Power:
   • In the “Advanced Mode” tab within the wireless interface configuration, look for the “Tx Power” option.
   • You can select “default” to use the device's default power settings, or select “all rates fixed” to set a specific value.
   • Enter the desired value in the “Tx Power” field expressed in dBm. Be sure not to exceed local regulations for power output.

Using the Command Line:

1. Access your MikroTik device:
   • You can do it through SSH or Telnet, entering your MikroTik terminal.
2. Identify the Interface:
   • Use the command /interface wireless print to list all wireless interfaces and identify the one you want to configure.
3. Adjust the Transmission Power:
   • Use the command to modify the power of the selected interface:
     
     /interface wireless set [find name="nombre-de-tu-interfaz"] tx-power-mode=all-rates-fixed tx-power=20dBm
     
   • Change "nombre-de-tu-interfaz" by the real name of your interface and 20dBm by the power value you want to set.

Considerations:

• Check Local Regulations: Before adjusting the power, make sure the selected value complies with the radiation and licensing regulations of your country or region.
• Perform Tests: After adjusting the power, it is advisable to perform tests to verify that the signal quality is still adequate and that you are not causing unnecessary interference.
• Monitoring: Monitor the network to ensure that the change does not negatively impact network coverage or performance.

Properly attenuating transmit power can help improve the health of your wireless network and optimize overall performance, while ensuring compliance with local regulations.