What is a Dual Band Router? Do I Need One?

Routers come in many shapes and sizes, and there are more than a few buzzwords to make them sound impressive. One of those buzzwords is “dual band,” which is something you might need depending on your home network.

Of course, if you're selling dual-band routers, you automatically want to convince people to get one. Thankfully, we don't do that, so you get a more objective approach.

Below, you'll learn more about dual-band routers, when they are helpful, and how they differ from other types of network equipment.

Quick tip: If you haven't already, check out our article on routers, explaining the device behind this specific variant.

What are Dual Band Routers?

Dual band routers are exactly the same as “regular” wireless routers (single band). The only difference is that they support two different wireless radio frequencies: 2.4 GHz and 5 GHz. At the bare minimum, these routers need wireless features because wired connections do not rely on radio frequencies.

Why two frequencies? Because these frequencies are good at different things. The 2.4 GHz connection can reach farther but sacrifices speed for that reach. Meanwhile, the 5GHz has a much higher potential speed, but less reach.

Here is some more information on the two frequencies:

5 vs. 2.4 GHz – How do they compare?

5 GHz is the newer of the two channels. It's relative newness means that it focuses on speed over distance, offering more of what people demand.

2.4 GHz is the older of the two, meaning it's stable over longer distances. To put it simply, the only time you should consider a 2.4 GHz band is when a 5 GHz option isn't available. If you're too far away or use an older device, use the older band.

Some devices, like baby monitors, rely on 2.4 GHz connections because they have no need for more speed. Simple devices can rely on a weaker frequency band. Smart home devices, for example, can rely on the slower speed.

Laptops, smartphones, and desktops are the only connected devices that rely on faster speeds. When you rely on faster speeds, you're more likely going to rely on wireless networks with speed.

Below, you'll learn more about the terms we used above so you can understand when tech support uses them.

Definitions:

GHz/MHz: Gigahertz and Megahertz both measure alternating currents of voltage that create different radio signals.
Frequency range: The range where wireless connections work best (determined by regulatory agencies so they don't interfere with other radio frequencies)
Bands: Both the 2.4 and 5 GHz are considered different wireless bands (another word for frequencies). These two bands are both on the same channel.
Channels: The medium (wired or wireless) to transport information between devices (like your computer to the internet).
Channel bandwidth: The range of frequencies that one channel can carry (20 to 40 MHz for 2.4 GHz connections)

Definitions and technical stuff aside, how do you know you have a dual band router? You can find out in the next section.

Different Types of Routers

There are three broad spectrums of routers, and two of those routers come in two different forms. Below, you'll learn more about the different types of routers:

Single band router: Relies on a single band (usually) 2.4 GHz. These routers are often older.
Dual band router: Relies on both 2.4 and 5 GHz bands on the wireless channel (see above).
Tri band router: Includes one 2.4 GHz and two 5 GHz bands, which is useful if you have a congested network. The two 5 GHz rely on different channels (some use the lower and others use the higher channels).

Tri band routers can better handle larger numbers of devices. By extension, dual band devices are better than single band devices. Unless you notice major network congestion, like slower speeds, you don't need a tri band router.

More radio waves does not automatically result in faster internet.

But even among these two devices, you see two variants. Both dual and tri band routers come in one of two forms:

Selectable routers let you choose between 2.4 and 5 GHz bands. Under these connections, you'll see the two connection types, often labeled by the band they support.
Simultaneous routers will automatically choose the band for you based on network congestion and availability. The “simultaneousness” of this is having both bands seeming to come from a single connection.

Sometimes, these multi-band routers let you change between selectable and simultaneous. If you want more granular control, you might prefer the selectable options. Otherwise, it's more convenient to select simultaneous.

When Do I Need a Dual Band Router?

You only need a dual band router when you have speed demands up to (or above) 1 Gbps. A small space in need of more internet speed is where your 5 GHz band will see the most use. You'll also more likely use this faster speed if you have more devices using more data.

For example, Wi-Fi 6 (the latest wireless technology release) offers far more speed than 2.4 GHz, single band alternatives. Because of these continuous updates, few routers rely exclusively on the older technology, and the demands for faster internet for wireless devices continues to grow.

Chances are, if you've bought a Wi-Fi router any time in the past several years, it’s been a dual band router. So even if you don't need one, you probably have one.

So… Why Should I Care If I Have a Dual Band Router?

In the world of fast devices and Wi-Fi 6, why should you care? There are two reasons:

First, dual band routers support more devices, including those that rely on the simpler 2.4 GHz model. Because it's older and slower, it's used across simpler devices that prioritize energy savings. Many smart home devices use the older form.

Second, 2.4 GHz are better in larger homes that require less speed. Closer devices can still rely on the faster device, making dual band tools incredibly helpful.

For more tips, check out our related articles on how modems can help these routers. You can also check out how gateways combine the features of both modems and routers.

Have you shopped your internet options lately? If not you might be missing out on the best speeds or deals! Check out our pages for high speed internet near you or even high speed internet at your address.

FAQs

What are the Advantages of Dual Band Routers?
Dual band routers reduce interference, provide faster speeds, and can handle more traffic. The 5 GHz band specifically offers faster speeds and more channels, reducing congestion especially in crowded areas. Meanwhile, the 2.4 GHz band is better at covering larger areas and penetrating solid objects like walls.

How Can I Tell if My Router is Dual Band?
To check if a router is dual band, look for specifications on the router itself or in its manual that mention both 2.4 GHz and 5 GHz frequencies. Some routers have labels or settings in their software interface that indicate dual band capabilities. You can also check the product details online or contact the manufacturer for this information.

Can a dual band router operate on both bands at the same time?
Yes, a dual band router can operate on both the 2.4 GHz and 5 GHz bands simultaneously. This allows you to connect different devices to the most suitable band based on their capabilities and your current network conditions. This simultaneous operation helps in optimizing your internet connection by reducing interference and ensuring a better online experience.

How does a dual band router improve network performance?
By providing two separate bands, a dual band router minimizes interference and offers better performance. The 2.4 GHz band has a longer range but may face congestion, while the 5 GHz band offers faster speeds and is less crowded. This arrangement allows for a cleaner, more reliable connection with reduced interference, especially in densely populated or urban areas.

What should I consider when buying a dual band router?
When buying a dual band router, consider the range, speed, and the number of devices you plan to connect. Those who need better performance and have newer devices may benefit more from the 5 GHz band. Also, features like beamforming technology can extend and focus the signal to reach devices located further away, enhancing the overall range and coverage of the router.