So, Wi-Fi waves are basically just radio waves. So, that's the same as the electromagnetic waves you pick up with your cell phone or a radio. But Wi-Fi waves are fairly short. They're only 12 centimeters long, the conventional kind—compare that to AM radio waves, which are hundreds of meters long. The signal gets a lot weaker as it gets further from the router. And, generally, it can't really go more than 150 feet from a single router. They actually get absorbed and blocked by walls and metal surfaces. And so, the way you position your Wi-Fi router makes a huge difference in how strong the signal is throughout your house.
Wi-Fi 基本上就是無線電波。跟手機或收音機發出的電磁波是一樣的。但 Wi-Fi 的波長很短。一般類型大概都只有 12 公分－－相較之下，AM 無線電波的波長可以長達數百公尺。Wi-Fi 距離路由器越遠，訊號會越弱。一般來說，路由器能覆蓋的範圍不超過 150 英尺（約 45 公尺）。無線電波通過牆壁和金屬表面時也會被吸收阻擋。所以，Wi-Fi 路由器的擺放位置會大幅影響你家中 Wi-Fi 的訊號強度。
One: Place your router out in the open.
One thing you definitely want to do is put your router near the center of your house because it broadcasts the signal out in equal strength in all directions. So, you want it out in the open. And, like, if it's in a closet, the walls of the closet are gonna absorb and block some of the signal. A good way to think about it is just use a line of sight. From whatever position you can see the furthest in your house, and you can see the most number of different rooms, that's probably a good place to put your router.
Two: Lift your router off the ground.
You also really want to lift your router up off the ground because the signals can't penetrate some of the materials that make up floors, like metal, or concrete, or cement. And also, the way most routers are designed...they broadcast the waves slightly downwards. So...that way, you're projecting less of it down into your basement for no reason.
將路由器放在離地面有段距離的位置，因為訊號可能無法穿透一些地板材質，像是金屬、鋼筋、水泥。此外，大部分路由器的設計...都會讓電波訊號稍微向下發送。所以...這樣擺，才能減少將 Wi-Fi 訊號無端發送到地下室的情形。
Three: Keep it away from other electronics.
A lot of other electronics can interfere with the router's signal—things like TVs, computers, microwaves, pretty much anything that has a motor inside it. So you want to keep the router away from other electronics.
Four: Point the antennas in different directions.
Most routers have two antennas on them. And, ideally, you could position one of them vertically and one horizontally. Devices work best when their internal antenna is parallel with the router's, and, so, most antennas inside laptops are horizontal. But if you're using a mobile device or a tablet, totally depends on how you're holding it. So, that way, if you have one horizontal and one vertical, you have the highest chance of having a parallel match with antennas.
Five: Measure your signal strength.
If you find that your network isn't working well, you can just go around and measure your signal strength. So, there's a lot of different apps that you can download on your phone. You could create a rough map and figure out what you need to do to fix it.