Overview

Weak Wi-Fi signals cause slow speeds and dead zones. This guide covers router positioning, channel optimisation, interference reduction, and range extenders to maximize your home Wi-Fi coverage.

Step 1: Optimise Router Placement

1

Central Location is Key

Place router in centre of home, not corner or edge
Wi-Fi signals radiate outward in all directions
Central position provides most even coverage
If cable socket is in corner, use long Ethernet cable to relocate router

2

Elevate the Router

Place on shelf, desk, or mount on wall
Avoid floor placement where signals absorbed by furniture
Higher position = better signal distribution
Aim for 1-2 metres off ground

Pro Tip:

Place router near ceiling of ground floor in two-storey homes for best coverage on both levels.

3

Keep Away from Obstructions

Avoid placing behind large furniture or in cupboards
Keep clear of thick walls, especially brick or concrete
Don't hide in TV cabinets or enclosed spaces
Metals, mirrors, and fish tanks significantly block signals

4

Adjust Antenna Position

If router has external antennas, position them strategically
For single floor: all antennas vertical (pointing up)
For multiple floors: one vertical, one horizontal
Experiment with different angles to find best coverage

5

Distance from Electronics

Keep at least 1 metre from other electronic devices
Especially: microwaves, cordless phones, baby monitors
These devices can cause interference on 2.4GHz band
Separation reduces signal degradation

Step 2: Optimise Router Settings

1

Access Router Settings

Find router IP address (usually 192.168.1.1 or 192.168.0.1)
Check router label for exact address
Enter IP in web browser address bar
Log in with admin credentials (check router label if unknown)

2

Change Wi-Fi Channel

Neighbouring routers on same channel cause interference
Download Wi-Fi analyser app (Android) or use Windows Settings → Network → Wi-Fi → Network properties
Identify least congested channel
2.4GHz: Use channel 1, 6, or 11 (non-overlapping)
5GHz: More channels available, less interference
Change channel in router wireless settings

Channel Selection:

If everyone uses channel 6 (default), switch to 1 or 11 for less congestion and faster speeds.

3

Use 5GHz Band

Modern routers broadcast on 2.4GHz and 5GHz simultaneously
5GHz: Faster speeds, less interference, shorter range
2.4GHz: Slower speeds, more interference, better range
Use 5GHz for devices close to router
Use 2.4GHz for distant devices or smart home gadgets
Enable both bands for flexibility

4

Update Router Firmware

Router settings → Administration or System
Look for Firmware Update or Router Update
Click Check for Updates
If available, install update (takes 5-10 minutes)
Don't interrupt update or power off router
Updates improve performance and security

5

Adjust Transmit Power

Some routers allow transmit power adjustment
Wireless settings → Advanced or Transmit Power
Set to 100% or High for maximum range
Note: Higher power = slightly more electricity usage

6

Enable QoS (Quality of Service)

Prioritises important traffic (video calls, gaming)
Router settings → QoS or Traffic Control
Enable and set priorities for devices or applications
Prevents one device hogging all bandwidth

Step 3: Extend Wi-Fi Range

1

Wi-Fi Range Extenders

Plug into wall socket halfway between router and dead zone
Receives router signal and rebroadcasts it
Cost: £20-£80
Setup: Press WPS button on router, then on extender
Or connect via web interface following manual
Creates new network name (SSID) or extends existing one

Limitation:

Extenders halve bandwidth. For best performance, use mesh systems or powerline adapters instead.

2

Powerline Adapters with Wi-Fi

Uses electrical wiring to extend network
Plug one adapter near router, connect via Ethernet
Plug second adapter in room with weak signal
Second adapter broadcasts Wi-Fi
Better performance than Wi-Fi extenders
Cost: £50-£150 for pair

3

Mesh Wi-Fi Systems

Multiple nodes create a single whole-home network
Devices automatically switch to strongest node
Single network name (no switching between networks)
Best solution for large homes or multiple floors
Popular brands: Google Nest Wi-Fi, TP-Link Deco, Netgear Orbi
Cost: £200-£500 for 2-3 node system

4

Additional Access Points

Wired solution for best performance
Run Ethernet cable from router to distant room
Connect wireless access point to cable
Broadcasts Wi-Fi in new location
Requires cable installation but no bandwidth loss

Step 4: Reduce Interference

1

Identify Interference Sources

Microwave ovens (2.4GHz interference when in use)
Cordless phones (especially 2.4GHz models)
Baby monitors
Bluetooth devices
Neighbouring Wi-Fi networks on same channel
Halogen lights and fluorescent bulbs

2

Solutions for Interference

Move router away from interfering devices
Switch to 5GHz band (not affected by microwaves)
Replace 2.4GHz cordless phones with DECT 6.0 models
Change Wi-Fi channel to avoid neighbour overlap
Turn off Wi-Fi on devices not in use

3

Physical Barriers

Walls reduce signal strength: plasterboard (minor), brick (moderate), concrete (severe)
Water blocks signals (aquariums, pipes, radiators)
Metal objects reflect signals (filing cabinets, refrigerators)
Position router to minimise wall penetration
Use 2.4GHz for better wall penetration when needed

4

Limit Connected Devices

Too many devices slow network performance
Disconnect devices not in active use
Use wired Ethernet for stationary devices (PCs, smart TVs, games consoles)
Reserve Wi-Fi for mobile devices that need it
Check router device list regularly and remove unknown devices

5

Test and Measure Improvements

Use speed test app or website (speedtest.net)
Test in different rooms before and after changes
Note speed and signal strength
Walk through home with phone checking Wi-Fi signal bars
Adjust router position or settings based on results

Realistic Expectations:

Wi-Fi speed always less than wired. Expect 50-70% of your internet speed on Wi-Fi, less in distant rooms.

6

When to Upgrade Your Router

Router over 5 years old may lack modern standards
Look for Wi-Fi 6 (802.11ax) or Wi-Fi 6E for best performance
Older Wi-Fi 4 (802.11n) routers significantly slower
New router costs £50-£300 depending on features
Upgrade worthwhile if current router bottleneck