如果您经常遇到连接中断(frequent connection drops)或无法达到预期速度的情况，则您的路由器可能正在使用拥塞的 Wi-Fi 通道。拥挤的频道不允许 Wi-Fi 信号顺利移动，这会导致您的连接出现问题。
幸运的是，有多种方法可以找到您所在地区的最佳 Wi-Fi 频道并让您的路由器使用该频道。这样，您的路由器使用最有效的通道来传递信号并改善您的连接。
您可以使用各种工具在Windows(Windows)、Mac和Linux计算机上找到最佳 Wi-Fi 通道。在本指南中，我们将重点关注Wi-Fi 2.4GHz的通道号 1、6 和 11。这是因为这些通道不会相互重叠。
在 Windows 10 上查找最佳 Wi-Fi 频道(Find the Best Wi-Fi Channel on Windows 10)
在Windows 10上，您可以使用众多 Wi-Fi 扫描仪工具(many Wi-Fi scanner tools)之一来查找您所在地区最有效的 Wi-Fi 通道。这些工具扫描您周围的网络，然后让您分析报告。然后，您可以在这些报告中找到最不拥挤的频道。
您可以在 Windows 10 上使用以下两个免费应用程序来为您的路由器找到最佳 Wi-Fi 频道。
使用 WiFi Analyzer 找到最佳 Wi-Fi 频道(Use WiFi Analyzer to Find the Best Wi-Fi Channel)
WiFi Analyzer是Microsoft Store上的免费应用程序，您可以使用它来获取有关您周围的 Wi-Fi 网络的信息。该应用程序首先扫描附近的网络(scans the nearby networks)，然后让您查看每个网络的频道。
使用这些数据，您可以找出您所在地区最不拥挤的 Wi-Fi 通道，然后将该通道与您的路由器一起使用。
- 打开Microsoft Store并下载免费的WiFi Analyzer应用程序。
- 安装并启动应用程序。
- 选择应用顶部的网络选项卡。(Networks)
- 在“网络(Networks)”选项卡中，您将看到您周围的所有无线网络及其频道的列表。
- 找到最少使用的频道。例如，在屏幕截图中，通道 8 是最不拥挤的通道。
使用 WifiInfoView 查找最佳 Wi-Fi 频道(Use WifiInfoView to Find the Best Wi-Fi Channel)
WifiInfoView是另一个免费应用程序，您可以使用它来扫描您周围的 Wi-Fi 网络并获取他们的频道信息。
- 在您的 PC 上下载并启动免费的WifiInfoView应用程序。(WifiInfoView)这是一个便携式应用程序，因此您无需安装它。
- 在应用程序界面上，选择显示Channel的列。这会按可用的 Wi-Fi 网络使用的信道数量对其进行排序。
- 查看此处使用最少的频道。
- 继续并将您的路由器配置(configure your router)为使用此列表中拥塞最少的频道。
在 macOS 上查找最佳 Wi-Fi 频道(Find the Best Wi-Fi Channel on macOS)
macOS 带有一个内置的 Wi-Fi 分析器工具，您可以使用它来查找附近网络的频道信息。此工具还直接告诉您要使用的最佳 Wi-Fi 频道，因此您无需进行任何挖掘。
- 按住键盘上的Option键，然后选择 Mac 菜单栏中的 Wi-Fi 图标。
- 从打开的菜单中，选择打开无线诊断(Open Wireless Diagnostics)。
- 您将看到一个无线诊断(Wireless Diagnostics)窗口。不要在此窗口中选择任何内容。相反，请选择顶部菜单栏中的“窗口(Window )” > “扫描”选项。( Scan)
- 在打开的扫描(Scan)窗口中，选择底部的立即扫描。(Scan Now)
- 您现在可以查看附近的所有 Wi-Fi 网络及其使用的频道。
- 在窗口的左侧，macOS 会告诉您应该为 2.4GHz 和 5GHz 路由器使用哪个频道。这些频道是您应该与路由器一起使用的最佳 Wi-Fi 频道。
在 Linux 上找到最佳 Wi-Fi 频道(Find the Best Wi-Fi Channel on Linux)
在 Linux 的各种发行版（包括Ubuntu ）上，您可以从(Ubuntu)终端(Terminal)运行命令以获取附近网络使用的Wi-Fi频道列表。(Wi-Fi)
去做这个：
- 在 Linux 计算机上打开终端。(Terminal)
- 键入以下命令并按Enter：sudo iwlist wlan0 scan | grep \(Channel
- 终端(Terminal)中显示次数最少的频道是您应该与 Wi-Fi 路由器一起使用的频道。
- 您现在可以关闭终端(Terminal)窗口。
更改 Wi-Fi 路由器的频道(Change Your Wi-Fi Router’s Channel)
由于每台路由器都提供了独特的设置菜单，因此您没有可以遵循的确切说明来更改路由器上的 Wi-Fi 频道(change the Wi-Fi channel on your router)。
但是，您可以使用以下通用步骤来更改路由器的 Wi-Fi 频道。您的特定路由器中的选项可能与以下步骤不同，但您会明白的。
- 在网络浏览器中访问路由器的设置页面。对于大多数路由器，您可以通过在浏览器的地址栏中输入192.168.1.1并按Enter来执行此操作。
- 在路由器的登录页面上，输入正确的登录凭据并选择OK。许多路由器使用admin作为默认用户名和密码。
- 从顶部菜单栏中选择无线设置（或类似设置）。(Wireless Settings)
- 从左侧边栏中，选择无线基本设置(Wireless Basic Settings)。
- 在右侧窗格中，选择频道(Channel)下拉菜单并选择最佳 Wi-Fi 频道。在这里，最好的 Wi-Fi 通道是您在上述过程中发现的最不拥塞的通道。
- 通过选择底部的确定(OK)来保存您的更改。
- 导航到顶部的维护选项卡，然后选择(Maintenance)重新启动路由器(Restart The Router)。这将重新启动您的路由器。
您的无线路由器现在使用最高效的 Wi-Fi 通道！
如果您发现 Wi-Fi 速度有所不同或不再出现连接中断，请在下面的评论中告诉我们。
How to Find the Best Wi-Fi Channel on Windows, Mac and Linux
If you’re experiencing frequent connection drops or not getting the speeds you expect, your router may be using a congested Wi-Fi channel. A crowded channel doesn’t allow the Wi-Fi signals to move smoothly, and this causes issues with your connection.
Luckily, there are ways to find the best Wi-Fi channel in your area and get your router to use that channel. This way, your router uses the most efficient channel to pass the signals and improve your connection.
You can use various tools to find the best Wi-Fi channels on Windows, Mac, and Linux computers. In this guide, we’ll focus on Wi-Fi 2.4GHz’s channel numbers 1, 6, and 11. This is because these channels don’t overlap with each other.
Find the Best Wi-Fi Channel on Windows 10
On Windows 10, you can use one of the many Wi-Fi scanner tools to find the most efficient Wi-Fi channel in your area. These tools scan the networks around you and then let you analyze the reports. You can then find the least congested channel in these reports.
Here are two free apps you can use on Windows 10 to find the best Wi-Fi channel for your router.
Use WiFi Analyzer to Find the Best Wi-Fi Channel
WiFi Analyzer is a free app on the Microsoft Store that you can use to get information for the Wi-Fi networks around you. The app first scans the nearby networks and then lets you view each network’s channel.
Using this data, you can figure out the least congested Wi-Fi channel in your area and then use that channel with your router.
- Open the Microsoft Store and download the free WiFi Analyzer app.
- Install and launch the app.
- Select the Networks tab at the top of the app.
- In the Networks tab, you’ll see a list of all the wireless networks around you with their channels.
- Find the least used channel. For example, in the screenshot, channel 8 is the least congested channel.
Use WifiInfoView to Find the Best Wi-Fi Channel
WifiInfoView is another free app you can use to scan Wi-Fi networks around you and get their channel information.
- Download and launch the free WifiInfoView app on your PC. This is a portable app, so you don’t need to install it.
- On the app interface, select the column that says Channel. This sorts the available Wi-Fi networks by the number of channels they use.
- See which channel is the least used here.
- Go ahead and configure your router to use the least congested channel from this list.
Find the Best Wi-Fi Channel on macOS
macOS comes with a built-in Wi-Fi analyzer tool and you can use this to find the channel information for the nearby networks. This tool also directly tells you the best Wi-Fi channel to use so you don’t have to do any digging.
- Press and hold down the Option key on your keyboard and select the Wi-Fi icon in your Mac’s menu bar.
- From the menu that opens, select Open Wireless Diagnostics.
- You’ll see a Wireless Diagnostics window. Don’t select anything in this window. Instead, select the Window > Scan option in the menu bar at the top.
- On the Scan window that opens, select Scan Now at the bottom.
- You can now see all the nearby Wi-Fi networks along with the channels they use.
- On the left side of the window, macOS tells you what channel you should use for both your 2.4GHz and 5GHz routers. These channels are the best Wi-Fi channels that you should use with your router.
Find the Best Wi-Fi Channel on Linux
On Linux’s various distributions, including Ubuntu, you can run a command from Terminal to get a list of Wi-Fi channels that your nearby networks use.
To do this:
- Open Terminal on your Linux computer.
- Type the following command and press Enter: sudo iwlist wlan0 scan | grep \(Channel
- The channel shown the least number of times in Terminal is the one you should use with your Wi-Fi router.
- You may now close your Terminal window.
Change Your Wi-Fi Router’s Channel
Since each router offers a unique settings menu, there’s no exact set of instructions you can follow to change the Wi-Fi channel on your router.
However, you can use the following generic steps to change your router’s Wi-Fi channel. The options in your specific router might not be the same as the steps below, but you’ll get the idea.
- Access your router’s settings page in your web browser. For most routers, you can do this by typing 192.168.1.1 in your browser’s address bar and pressing Enter.
- On the router’s login page, enter the correct login credentials and select OK. Many routers use admin as the default username and password.
- Select Wireless Settings (or similar) from the top menu bar.
- From the left sidebar, choose Wireless Basic Settings.
- On the right pane, select the Channel dropdown menu and choose the best Wi-Fi channel. Here, the best Wi-Fi channel is the one that you found to be the least congested in the above procedures.
- Save your changes by selecting OK at the bottom.
- Navigate to the Maintenance tab at the top and select Restart The Router. This reboots your router.
And your wireless router now uses the most efficient Wi-Fi channel!
If you notice a difference in your Wi-Fi speeds or there is no connection drop anymore, let us know in the comments below.
