Many apartment owners are familiar with the situation where the internet is lightning fast in one room, while the video in the next room freezes every minute. The problem with poor coverage is often not the provider's fault, but rather the physics of radio wave propagation and improper equipment configuration. The signal weakens when passing through walls, especially if they are reinforced or have a thick layer of concrete.
Resolving this issue requires a comprehensive approach: from simply moving the router to a more convenient location to purchasing additional equipment. In this article, we'll explore the technical nuances that will help you ensure stable signal in all corners of the home without unnecessary expenses on specialist services.
Correct placement of the router in space
The first thing you need to do is analyze your router's current location. Often, users hide their router behind a TV, in a cabinet niche, or on a shelf in the hallway, driven by aesthetics rather than the laws of physics. Wi-Fi router It emits a signal in all directions, but metal objects and dense furniture create serious obstacles.
The ideal location is considered to be the center of the apartment, located as high as possible. If the router is on the floor or at the bottom of a cabinet, lower furniture and appliances will block the signal. Elevate the device 1.5–2 meters to ensure unimpeded transmission of the waves.
- 📍 Place the router in a central room, not in a far corner.
- 📡 Keep the device away from microwave ovens and baby monitors.
- 🚫 Do not hide antennas behind monitors or metal structures.
- 🏠 Consider the layout: the signal penetrates worse through load-bearing walls.
If your device has external antennas, point one vertically and the other horizontally—this will help cover more devices with different receiver orientations.
⚠️ Attention: If you live in an apartment building, the walls between apartments may be shielded with foil or metal mesh. In such cases, penetrating the wall is virtually impossible, and the signal will have to be routed through hallways or open doorways.
Setting up the frequency range and channels
In modern apartment buildings, the airwaves are oversaturated with signals from neighboring networks. This leads to interference and speed drops. Most routers operate in two bands: 2.4 GHz And 5 GHzThe first has a longer range, but is more susceptible to interference, the second is faster, but has poorer penetration through walls.
For devices located far from the router, it's best to use the 2.4 GHz band, selecting a clear channel first. The 5 GHz band has more channels and interferes less with neighboring channels, resulting in cleaner air. You can switch to the desired band through the router's web interface.
To enter the settings, you usually need to enter the IP address of the device (often 192.168.0.1 or 192.168.1.1) in your browser. After logging in, find the section Wireless or Wi-Fi settingsHere you can manually set the channel or enable automatic selection mode.
| Parameter | 2.4 GHz band | 5 GHz band |
|---|---|---|
| Range of action | High (up to 50 m indoors) | Medium (up to 20-30 m) |
| Penetration ability | Good | Low |
| Maximum speed | Up to 150-300 Mbps | Up to 1 Gbps and higher |
| Interference level | High (neighbors, Bluetooth) | Short |
Use mobile Wi-Fi network analysis apps to find the least congested channel. In the 2.4 GHz band, it's best to select only channels 1, 6, or 11, as they don't overlap.
Firmware update and power adjustment
A router's software is the "brain" of the device, and its current version can significantly impact connection stability. Manufacturers regularly release updates that fix bugs and improve signal processing algorithms.
You can check for a new version in the section Administration or System ToolsSome models support automatic updates, while others require manual file downloading from the manufacturer's official website. Be sure to save your current settings before updating.
⚠️ Attention: Never interrupt the firmware update process or unplug the router during this process. This could cause irreversible damage to the device ("bricked"), making it extremely difficult to restore.
Also in the wireless network settings you can often find the parameter TX Power or "Transmitter Power." By default, it can be set to 50% or 70%. Increasing this value to 100% (High) will help strengthen the signal, but may cause the device to overheat.
☑️ Checking your router software
Using repeaters and mesh systems
If optimizing settings and relocating the router don't yield the desired results, you'll have to expand your coverage area using hardware methods. The simplest and most cost-effective option is to use Wi-Fi repeater (repeater). This device receives the signal from the main router and broadcasts it further.
Simply plug the repeater into a power outlet within a strong reception range and press the pairing button. However, this method has a significant drawback: the internet speed on the repeater often drops by half, as the device operates in half-duplex mode.
A more modern and effective solution is Mesh systemIt consists of several modules that connect to form a seamless network. Unlike a repeater, a mesh system allows devices to automatically switch between modules without losing connection as you move around your apartment.
- 🔄 The repeater creates a separate network (e.g. Home_EXT), requiring manual switching.
- 🌐 A mesh system uses one network name (SSID) for all access points.
- 🚀 Mesh technologies intelligently select the best path for traffic.
- 💰 The Mesh system is more expensive, but the ease of use is worth it.
⚠️ Attention: When purchasing a repeater or mesh system, pay attention to its speed support. If your main router supports AC1200, any additional equipment should also support it, otherwise it will become a bottleneck.
What is the difference between bridge and repeater mode?
Bridge mode is typically used to connect two networks via cable or point-to-point radio, while a repeater simply extends an existing wireless network by receiving and re-radiating the signal.
Antenna replacement and equipment upgrades
Standard antennas included with routers often have minimal gain (usually 2-3 dBi). Replacing them with more powerful models (5 dBi or 8 dBi) can provide a significant signal boost in certain directions.
When choosing antennas, it's important to consider the connector type (most often SMA or RP-SMA) and polarization. Directional antennas allow you to focus the signal on a specific room but will reduce coverage in other directions. Omnidirectional antennas distribute the signal evenly around them.
If your router is more than 5-7 years old, no amount of tweaking will help it work effectively with modern devices. Old standards 802.11n or 802.11g physically cannot provide high speed and stability in noisy airwaves.
When choosing a new router, look for gigabit ports (WAN and LAN), dual-band support, and modern security protocols. A USB port will allow you to connect a 4G modem as a backup connection in the future.
Diagnostics and elimination of external interference
Problems can be caused not only by neighbors but also by your own electrical appliances. Aquariums, mirrors, foil insulation behind radiators, and even fairy lights can create significant interference with radio signals.
Try an experiment: turn off suspicious devices and check the signal strength on your smartphone. Pay particular attention to the kitchen and areas where powerful appliances are installed. It's also worth checking that your router isn't overheating—high temperatures can lead to processor throttling and connection drops.
For accurate diagnostics, use the command line in Windows. Command ping will help check the stability of the connection and the presence of packet loss. Run the command ping 8.8.8.8 -t and observe the response time for a few minutes.
ping 8.8.8.8 -tIf you see sudden jumps in response time (for example, from 20 ms to 500 ms) or "Timeout exceeded" messages, this means the channel is overloaded or the equipment is unstable. In this case, the only solution is to change the channel or upgrade the equipment.
Why does Wi-Fi only work near the router?
Most likely, the signal is being blocked by thick walls or metal structures. Low transmitter power or operation in the crowded 2.4 GHz band could also be the cause. Try switching to 5 GHz or installing a repeater.
Does the number of connected devices affect the range?
The number of devices doesn't affect the physical range of the signal, but it does affect speed and stability. If the channel is clogged with traffic from multiple devices, each device gets less airtime, creating the illusion of poor reception.
Is it possible to make an antenna for a router yourself?
Theoretically, it's possible (for example, using foil or a can), but such structures have an unpredictable radiation pattern and can worsen the situation. It's cheaper and safer to buy a certified antenna with the required gain.