Do WiFi Repeaters and Extenders Affect Internet Speed Differently?

Seller nomenclature can be confusing, but it is important to understand the differences between WiFi repeaters and extenders and how they can impact your internet speed. While the terms 'repeater' and 'extender' are often used interchangeably, they can have different effects on your wireless network performance.

Understanding WiFi Repeaters and Extenders

The name matters less than the functionality. Sellers may use whatever term they believe will sell their product, but there is no technical meaning to 'extender.' The term 'extender' refers to a device that creates a new network by connecting to the router and broadcasting a new signal, whereas a 'repeater' is meant to rebroadcast the existing WiFi signal on a new channel or SSID.

Some devices called 'repeaters' merely rebroadcast the signal on the same channel and SSID, which can severely degrade your bandwidth. They must delay the retransmission to avoid a feedback loop, which can lead to significant performance issues. In contrast, a 'repeater' that retransmits the signal on a new frequency (WiFi channel) with a new SSID can be more effective without sacrificing performance.

Function and Speed Impact

WiFi Repeaters

Function: A WiFi repeater receives the existing WiFi signal and retransmits it to extend coverage. However, it often uses the same channel to communicate with both the router and the client devices.

Speed Impact: Due to the shared channel usage, repeaters can halve the bandwidth available to connected devices. This can lead to noticeable reductions in speed, especially if the original signal from the router is weak. The delay in retransmission can exacerbate this issue, leading to slower internet speeds and potentially even reduced reliability of the connection.

WiFi Extenders

Function: A WiFi extender, often called a 'range extender,' creates a new network by connecting to the router and broadcasting a new signal. It may be able to connect on a different channel or use dual-band technology.

Speed Impact: Extenders can maintain better speeds than repeaters, as they may use a different channel or dual-band technology. However, they can still experience some speed loss, although it is generally less severe compared to repeaters.

Summary and Best Practices

Repeaters are more likely to reduce speed significantly due to their shared channel usage, whereas extenders can maintain better speeds but may still experience some reduction depending on the setup and distance from the router.

For optimal performance, consider using a wired connection to the extender or repeater if possible. Alternatively, explore mesh WiFi systems, which are designed to provide seamless coverage and better speed across larger areas.

Examples: Some devices, such as the Edimax BR-6478AC V2, offer a 5-in-1 solution that includes a router, access point, repeater, wireless bridge, and WISP (Wireless Internet Service Provider) mode, making them a comprehensive choice for expanding your network.

Understanding the differences between WiFi repeaters and extenders is crucial for optimizing your home or business network. By selecting the right device and understanding its functionality, you can improve your internet speed and overall network performance.