How do WiFi extenders work?
TL;DR
- WiFi extenders help expand the reach of your router.
- WiFi extenders must receive strong signal – but not be too close to the router.
- Depending on the model, you may have to switch between networks to access the boosted signal.
- Ensure your extender supports the same WiFi standards and frequency bands for your router.
Picture this: you’ve had a long, busy day at work and all you want to do is watch some Netflix with a cup of tea (or wine, whatever floats your boat). But, oh no, once again the kids are hogging the sitting room TV. You think to yourself, “I wish there was some genius who designed a device that would allow my WiFi to reach my bedroom at the opposite end of my house. This would be the source of my happiness, and my sanity.”
Well, well, well, three holes in the ground. Turns out there actually is a genius who designed such a device!
A WiFi extender (sometimes called a WiFi booster or WiFi repeater) works by receiving your existing wireless signal from your router and rebroadcasting it to areas with weaker coverage. This helps improve WiFi range throughout your home, without needing a second broadband connection.
Allow us to break it down a little:
How does a WiFi extender work?
Step 1: The extender grabs your existing WiFi signal
First things first: the extender connects to your router’s WiFi network. It needs to sit somewhere that still gets a decent signal from your router – not too close, not too far away. Think Goldilocks, but for broadband.
Step 2: It boosts the signal strength
Once the extender captures the signal, it amplifies it using internal antennas and signal technology. Fancy stuff, but all you really need to know is that it gives your WiFi a helping hand so it can travel further around your home.
Step 3: It rebroadcasts the WiFi to weaker areas
The extender then rebroadcasts the improved signal into those annoying dead zones where your internet usually gives up on life. Some extenders create a separate WiFi network name (SSID), while newer models can seamlessly work with your existing network.
Step 4: Your devices connect to the stronger signal
Your phone, laptop, smart TV and questionable number of smart home gadgets can then connect to the stronger nearby signal instead of desperately clinging onto one lonely bar of WiFi from downstairs.
Step 5: You may need to set it up
Once installed, you’ll probably need to configure the extender using an app or setup page. But don’t panic — despite looking mildly intimidating at first glance, most modern WiFi extenders are surprisingly easy to set up if you follow the instructions.
Are WiFi boosters and WiFi extenders the same thing?
In most cases, yes, people use the terms WiFi booster, WiFi extender and WiFi repeater interchangeably. All three describe devices designed to improve wireless coverage in areas where your router’s signal struggles to reach. But, it’s worth noting that:
- “booster” is more of a marketing term
- “extender” is the technical term
- mesh WiFi is slightly different
| Device | What it does | Best for |
| WiFi extender | Rebroadcasts WiFi signal | Small dead zones |
| WiFi booster | A general term for signal-improving devices | General home use |
| Mesh WiFi | Uses multiple access points | Larger homes |
Where should you place a WiFi extender?
Where you place your WiFi extender can make a huge difference to performance. Put it too close to your router and it won’t extend coverage very far. Put it too far away and it’ll struggle to pick up a strong enough signal to work properly. Basically, WiFi extenders are a bit needy when it comes to positioning...
Place it halfway between your router and the dead zone
Your extender should sit roughly halfway between your router and the area with poor WiFi signal. This gives it the best chance of receiving a strong enough connection to rebroadcast properly.
Avoid thick walls and large obstacles
Brick walls, metal surfaces and concrete floors can weaken WiFi signals faster than you can say “why is Netflix buffering again?”. Try to position your extender in a more open space where possible.
Keep it away from microwaves and electronics
Microwaves, baby monitors and some wireless devices can interfere with your WiFi signal. Your extender probably doesn’t want to live next door to your kitchen appliances.
Higher placement usually works best
Placing your extender slightly higher up (on a shelf or table rather than hidden behind furniture) can help improve signal coverage throughout your home.
Don’t hide it behind the TV!
We know cables and gadgets aren’t exactly interior design goals, but hiding your extender behind the TV cabinet can weaken the signal. Sometimes good WiFi requires small sacrifices.
A few things to keep in mind
While WiFi extenders are a pretty nifty bit of kit, they’re not miracle workers. Because the extender is receiving and rebroadcasting the signal at the same time, there can sometimes be a slight drop in speed or signal quality, especially if there are obstacles, interference or long distances involved. They can absolutely improve coverage in weak-signal areas, but the further you move away from the extender itself, the weaker the connection may become. Sadly, even technology has its limits.
Do WiFi extenders slow down internet speed?
WiFi extenders can reduce internet speeds slightly because they use part of their bandwidth to communicate with the router while also serving connected devices. However, modern dual-band extenders and mesh WiFi systems are designed to minimise this slowdown.
Visit BrawBand and purchase a mesh WiFi extender
How to choose the best WiFi extender
Now, you’ve made it this far and you’re probably thinking: “Great. I understand WiFi extenders now. But how do I choose one without accidentally buying something that belongs in a technology museum?”
Fear not. BrawBand has your back.
Not all WiFi extenders are created equal, so here are a few things worth checking before you part ways with your hard-earned cash:
Compatibility with your router
This is the big one. Your WiFi extender needs to work with your existing router and broadband setup. Check that it supports the same WiFi standards and frequency bands. Otherwise, you could end up with a very expensive paperweight.
Visit BrawBand to sign up (and purchase a compatible mesh WiFi extender)
Coverage range
Think about where your WiFi struggles most. A small flat may only need a basic extender, while larger homes or garden offices might need something with a stronger range or even a mesh WiFi system.
Dual-band vs single-band
Dual-band extenders can support both 2.4GHz and 5GHz frequencies, helping deliver better speeds and more reliable performance. In short: less buffering, fewer angry sighs.
WiFi 6 support
If your router supports WiFi 6, it’s worth choosing an extender that does too. WiFi 6 can improve speeds, device handling and overall network efficiency. Particularly handy if your home contains approximately 47 connected devices.
Mesh WiFi compatibility
Some newer extenders work as part of a mesh WiFi system, creating smoother coverage throughout your home without constantly switching between networks. Fancy.
Number of connected devices
If your household contains gamers, streamers, remote workers and someone who insists on talking to Alexa every five minutes, you’ll want an extender that can comfortably handle multiple devices at once.
Before buying anything, it’s always worth reading reviews and checking you’re not paying extra for features you’ll never actually use. Your wallet will thank you later.
When should you upgrade to mesh WiFi instead of a Wifi extender?
WiFi extenders are brilliant for fixing smaller dead zones and boosting coverage in awkward spots around your home. But sometimes, an extender simply isn’t enough. It might be a bit like trying to heat a castle with one tiny radiator.
If you’ve got a larger home, multiple floors or roughly a million devices connected to your network at all times, it might be worth upgrading to a mesh WiFi system instead.
Unlike traditional WiFi extenders, mesh WiFi uses multiple devices (called nodes) that work together to create one seamless WiFi network across your entire home. That means fewer dropouts, fewer awkward buffering moments and less wandering around the house holding your phone in the air trying to find signal. Consider upgrading to mesh WiFi if:
Your home has multiple floors
Signals can struggle to travel between floors, especially in older homes with thick walls and stubborn architecture.
You have WiFi dead zones in several rooms
If your WiFi struggles in more than one area, a single extender might not fully solve the problem. Mesh systems are designed for wider whole-home coverage.
Lots of people are using the internet at the same time
Streaming, gaming, video calls, smart TVs, smart doorbells, smart fridges… modern homes ask a lot from broadband. Mesh WiFi is generally better at handling lots of connected devices simultaneously.
You work from home
Nobody wants their video call freezing mid-sentence while they pretend they definitely understood the last five minutes of the meeting. Mesh WiFi can provide a more stable connection throughout the house.
You want seamless WiFi coverage
Traditional extenders sometimes create separate network names, while mesh WiFi systems are designed to keep everything connected under one network as you move around your home.
At the end of the day, the right option depends on the size of your home, the number of devices you use and how much coverage you need. For smaller signal issues, a WiFi extender or WiFi booster can do the trick nicely. But for much larger homes and heavier internet use, mesh WiFi is often the smoother long-term solution.
