When you configure your MikroTik antenna to operate in 20/40 MHz mode (often referred to as 20/40 MHz Ce or 20/40 MHz eC, depending on the channel extension control setting), it is designed to dynamically adapt and use the channel width that suits you best based on network conditions and wireless environment.

20/40 MHz Mode Operation:

• 20MHz: This is the standard bandwidth for Wi-Fi channels. It offers strong compatibility and is suitable for environments with many wireless devices and potential interference, as narrower channels are less susceptible to interference from other devices.
• 40MHz: Using a 40 MHz channel provides greater bandwidth, which can potentially double the data transfer rate compared to using 20 MHz. However, it is more susceptible to interference and can affect other devices. wireless in densely populated areas over Wi-Fi networks.

20/40 MHz Mode Adaptability:

• Automatic Selection: Setting the device to 20/40 MHz allows you to use a 20 MHz channel in environments where there is a lot of interference from other wireless devices or congested channels. If conditions are favorable and there is little risk of interference with other devices, you may choose to use 40 MHz to increase performance.
• Connectivity Considerations: The decision to use 20 MHz or 40 MHz also depends on the capabilities and configurations of the client devices. Some older devices may not support 40 MHz channels, which would limit the connection to 20 MHz.
• Regulations and Compliance: It is important to be aware of local regulations regarding frequency spectrum, as in some areas the use of 40 MHz channels may be restricted to minimize interference.

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When you configure your MikroTik antenna in 20/40 MHz mode, you are enabling the device's ability to dynamically choose between using 20 MHz or 40 MHz bandwidth, based on which maximizes performance while minimizing interference.

This flexibility makes 20/40 MHz mode a preferred option in many wireless deployment scenarios.