How to increase the range of an ASUS Wi-Fi router: from settings to hardware solutions

A weak Wi-Fi signal on the edge of an apartment or in the far corner of an office is a familiar problem for router owners. ASUS, especially when it comes to models like RT-AX88U, RT-AC68U or budget RT-N12Even top-end devices with support Wi-Fi 6 may not reach some areas, and in apartment buildings, interference from neighbors makes the situation worse. In this article, we'll look at 7 working methods Increase your coverage range - from free software tricks to hardware upgrades.

It is important to understand that the signal range depends not only on the transmitter power, but also on frequency range, the number of connected devices, wall materials, and even furniture placement. For example, a 20 cm thick concrete wall weakens the signal 2.4 GHz by 10–15 dB, and on 5 GHz — up to 20–25 dB. Therefore, there is no universal solution: in some cases, changing the channel will help, while in others, installation will be required. Mesh systems.

We tested all methods on routers ASUS different series (from RT-N56U to GT-AX11000) and highlighted those that provide significant gains without purchasing expensive equipment. Let's start with the simplest and most free methods.

1. Optimizing router settings: channels, power, and protocol

The first thing you need to do is go to the router's web interface (192.168.1.1 or router.asus.com) and check key parameters. Many users leave the default settings unchanged for years, even though they're far from optimal for real-world conditions.

Let's start with the choice Wi-Fi channelIn urban areas, most routers operate on automatic selection, but this often leads to signal interference. Use utilities like Wi-Fi Analyzer (Android) or NetSpot (Windows/macOS) to find the least crowded channel. For the range 2.4 GHz It's better to choose channels 1, 6 or 11 - they don't intersect. 5 GHz Give priority to channels with numbers 36–48 or 149–165 (if supported by your model).

• 📡 Channel width: For 2.4 GHz install 20 MHz (reduces interference) for 5 GHz — 40 MHz or 80 MHz (increases speed but decreases range).
• 🔋 Transmission power: On the menu Wireless Network → Professional find the parameter Tx Power (or Transmit Power). Set value 100% (maximum), but keep in mind that this will increase power consumption.
• 🔄 Wireless network mode: For 2.4 GHz select Legacy (if you have old devices) or N-only (for modern people). On 5 GHz give priority AC/AX (For Wi-Fi 5/6).

It is equally important to turn off energy savings (if it is in the settings) and turn it on WMM (Wi-Fi Multimedia) to prioritize traffic. Also, check if the mode is enabled Airtime Fairness - It is useful in networks with many devices, but may reduce range for individual clients.

2. Firmware update and factory reset

The router's factory firmware often contains errors that affect the stability and range of the signal. ASUS Regularly releases updates that fix issues with radio modules and data transmission algorithms. Check the current firmware version in the menu. Administration → Firmware Update.

If a new version is available, update. For models with support Asuswrt-Merlin (For example, RT-AC86U, RT-AX88U) we recommend alternative firmware from RMerlinIt optimizes radio module operation and adds advanced power settings. You can download it from the project's official website (search for your router model).

Download the firmware from the official ASUS website

Connect the router to a UPS (if the power goes out, the process will be interrupted)

Save current settings to a file (menu "Administration → Save/Restore")

Do not use Wi-Fi during the update (connect via cable)

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If the signal has not improved after the update, please do full reset button Reset (Hold for 10-15 seconds). This will clear all user settings, including any incorrect channel or power settings. After the reset, reconfigure the router following the instructions in the first section.

⚠️ Attention: On some models ASUS (For example, RT-AC5300) after updating the firmware the region may reset (Country/Region). If the wrong region is selected, the router will operate with limited power. Check this setting in the menu. Wireless Network → Professional.

3. Correct placement of the router: where and how to install it

Even the most powerful router is useless if it's in the wrong place. The optimal location is center of the room, at altitude 1.5–2 meters from the floor (for example, on a shelf or wall). Avoid placing near:

• 🧲 Sources of electromagnetic interference: microwaves, cordless DECT phones, baby monitors.
• 🪟 Metal surfaces: refrigerators, iron doors, mirrors with a metal coating.
• 💧 Sources of moisture: aquariums, bathrooms (moisture absorbs the signal on 5 GHz).
• 🪑 Large furniture: cabinets, sofas with a metal frame, books (paper weakens the signal).

If the router is in the corner of the apartment, move it closer to the center or use Ethernet extender (up to 100 meters). For models with removable antennas (ASUS RT-AC88U, GT-AX6000) experiment with their position:

• 📶 Vertically upwards — for covering several floors.
• 🔄 At an angle of 45° — for uniform distribution of the signal horizontally.
• 🔀 In different directions - if there are several antennas (for example, 4 pieces on RT-AX88U).

4. Replacing antennas: when it makes sense

Budget models ASUS (For example, RT-N12, RT-AC51U) are equipped with antennas with amplification 3–5 dBi. Their replacement with more powerful ones (for example, 7–9 dBi) can increase the range by 20–30%, but only if you make the right choice.

It is important to understand two points:

1. Connector type: U ASUS connectors are used RP-SMA (most models) or IPEX (for compact routers like RT-AC52U). Before purchasing, check what connector your model has.
2. Direction:
   • Omnidirectional antennas (omnidirectional) - cover the space around the router evenly (suitable for apartments).
   • Directional antennas (directional) - focus the signal in one direction (useful for communication between buildings).

Before purchasing, please consider: excessive antenna gain (over 9 dBi) This can have the opposite effect—the signal will "shoot" past the target zone. Also, check if your router supports it. MIMO (multi-stream data transfer). If so, swap antennas in pairs to avoid speed loss.

⚠️ Attention: On some models ASUS (For example, RT-AX58U) The antennas are non-removable. Replacing them will void the warranty and may damage the device. Check the documentation before upgrading.

5. Using repeaters and mesh systems

If the router physically cannot cover the entire area (for example, in a large house or office), use signal repeaters (repeaters) or Mesh systemsRepeaters are cheaper, but they create a separate network, which can reduce speed. Mesh systems are more expensive but provide seamless roaming between nodes.

For routers ASUS will do:

• 🔄 Repeaters:
  • ASUS RP-AC55 - dual-band, compatible with AiMesh.
  • TP-Link RE605X - supports Wi-Fi 6, speed up to 1.8 Gbps.
  • Xiaomi Mi Wi-Fi Repeater 2 — a budget option for small spaces.
• 🏠 Mesh systems:
  • ASUS ZenWiFi AX (XT8) - two-node system with support Wi-Fi 6 And AiMesh.
  • TP-Link Deco X60 — universal for any routers.

When setting up the repeater, pay attention to signal level from the main router. If it is lower -70 dBm, the repeater will work unstable. Use the app Wi-Fi Analyzerto find the optimal installation location. For AiMesh (technology from ASUS) compatible router models are suitable, for example, RT-AC68U + RT-AC86U.

How to check compatibility with AiMesh?

For a router or repeater to work in AiMesh mode, it must support this technology. A full list of compatible devices is available on the ASUS website in the "AiMesh" section. For example, the RT-AC86U, RT-AX88U, RT-AX58U, and the latest firmware versions for the RT-AC68U support AiMesh. If your router isn't listed, use a regular repeater or a mesh system from another manufacturer.

6. Alternative firmware: unlocking hidden capabilities

Stock firmware ASUS limits some parameters of the radio module. Alternative firmware like Asuswrt-Merlin, DD-WRT or OpenWRT allow:

• 📞 Enlarge transmit power above the standard 100 mW (up to 200–500 mW on some models).
• 🔧 Fine-tune packet scheduler (QoS) to prioritize traffic.
• 📡 Enable experimental modes like 802.11r (fast roaming) or 802.11k (connection optimization).

For example, in Asuswrt-Merlin Advanced settings are available for:

wl0_txpwr = 24 # Transmit power on 2.4 GHz (in dBm)
wl1_txpwr = 24 # Transmit power at 5 GHz

Be careful though: excess of permitted power (in Russia - up to 100 mW For 2.4 GHz And 200 mW For 5 GHz) may violate the Law on Communications. Furthermore, excessive power overheats the radio module and shortens its service life.

⚠️ Attention: Installing unofficial firmware will void your router's warranty. On some models (RT-AX88U Pro, GT-AXE16000) alternative firmware may not be supported due to the closed bootloader.

7. Additional methods: reflectors, amplifiers and non-standard solutions

If all the above methods don't help, try unconventional approaches:

• 🪞 Signal reflectorsA flat metal sheet (like a tin can) behind the antenna can direct the signal in the desired direction. The effect is weak, but it can be helpful in some cases.
• 📶 External amplifiers: Devices like Alfa Network Wi-Fi Booster They connect to the router via cable and boost the signal. Prices start at 3,000 rubles.
• 🔌 Powerline adapters: If Wi-Fi does not pass through walls, transmit the Internet through electrical wiring (for example, TP-Link AV1000). The speed is lower, but the stability is higher.
• 📡 Outdoor antennas: For communication between buildings use directional antennas (For example, Ubiquiti LiteBeam M5) with coaxial cable.

For advanced users, there is another way - router modification by soldering additional amplifiers or replacing the radio module. However, this requires soldering skills and knowledge of circuit design. On forums like OpenWRT or DD-WRT You can find guides on such modifications for specific models ASUS.

FAQ: Frequently asked questions about increasing the Wi-Fi range on ASUS

Is it possible to increase the Wi-Fi range without purchasing additional equipment?

Yes, in most cases free methods help:

1. Change the Wi-Fi channel to a less busy one.
2. Updating router firmware.
3. Optimize the location of the router (center of the room, height 1.5–2 m).
4. Turning off and on energy saving WMM.

These methods can increase the range by 10–40% depending on the initial conditions.

Which ASUS router has the longest range?

Among consumer models, the leaders in range are:

• ASUS RT-AX88U Pro - 4 antennas, support Wi-Fi 6, power up to 1.8 Gbit/s.
• ASUS GT-AX6000 - dual-band, with technology RangeBoost to increase coverage.
• ASUS RT-AX92U - supports AiMesh and has removable antennas with amplification 4 dBi.

For larger houses it is better to consider Mesh systems like ASUS ZenWiFi AX (XT8).

Why did the signal get worse after replacing the antennas?

Possible reasons:

• Incompatible gain (for example, an antenna 9 dBi on a router designed for 5 dBi).
• Incorrect position of antennas (for MIMO routers it is important to keep the original configuration).
• Poor contact in the connector RP-SMA (check if the antenna is screwed tightly).
• Antenna directional type, but it is installed in the wrong direction.

Replace the old antennas and check if the signal returns. If so, the problem is with the new antennas.

How to check the actual transmission power of a router?

Use one of these programs:

• Wi-Fi Analyzer (Android) - shows the signal strength in dBm.
• NetSpot (Windows/macOS) — creates a heat map of the coverage.
• Linux command iwconfig — displays the current transmit power.

For accurate measurements, hold the device 1 meter away from the router and record the readings. Then repeat the measurement in the problem area. The difference will indicate how much the signal has weakened.

Legal to increase Wi-Fi power above standard limits in Russia?

The following restrictions are in effect in Russia (according to the Order of the Ministry of Communications No. 149 of 2016):

• 2.4 GHz: maximum transmitter power — 100 mW (20 dBm).
• 5 GHz: maximum power - 200 mW (23 dBm) for internal use.

Exceeding these limits without a license is prohibited and may result in fines. Alternative firmware often allows for bypassing the restrictions, but this is illegal.