Can 5GHz pass through walls?

Answered by James Kissner

When it comes to wireless networks, the frequency at which they operate plays a significant role in their ability to penetrate solid objects such as walls. In the case of 5 GHz networks, they do not penetrate walls as effectively as 2.4 GHz signals. This limitation can have an impact on the reach and coverage of an access point inside buildings like homes and offices, where there are often multiple walls between the wireless antenna and the user.

One of the main reasons why 5 GHz signals struggle to pass through walls is due to their shorter wavelength compared to 2.4 GHz signals. The wavelength of a signal determines its ability to diffract or bend around obstacles. Since 5 GHz signals have a shorter wavelength, they are more easily absorbed and reflected by solid objects like walls, resulting in a reduced range and weaker signal strength.

In my personal experience, I have noticed a significant difference in the performance and coverage of 5 GHz networks compared to 2.4 GHz networks when it comes to penetrating walls. When using a 5 GHz network, the signal strength tends to drop significantly as I move further away from the access point or encounter more walls in between. This can lead to a noticeable decrease in internet speed and connectivity in areas of a building that are far from the router or have many obstructions.

It is important to note that while 5 GHz signals may struggle to pass through walls, they do offer advantages in terms of network performance and congestion. The 5 GHz frequency band has more available channels and less interference from other devices, resulting in faster and more reliable connections in areas with less obstruction. This makes 5 GHz networks ideal for applications that require high bandwidth, such as streaming high-definition videos or online gaming, when used in close proximity to the router.

To overcome the limitations of 5 GHz networks in terms of wall penetration, a few strategies can be employed. Firstly, placing the wireless router or access point in a central location within the building can help improve coverage and minimize the number of walls the signal needs to pass through. Additionally, using multiple access points or range extenders strategically placed throughout the building can help extend the reach of the network and overcome the barriers posed by walls.

5 GHz networks do not penetrate walls as effectively as 2.4 GHz signals due to their shorter wavelength. This limitation can affect the coverage and range of the network inside buildings, where multiple walls may obstruct the signal. Despite this drawback, 5 GHz networks offer advantages in terms of performance and congestion management. By strategically placing access points and routers, the limitations of wall penetration can be mitigated to some extent.