Users often encounter situations where the speed stated by the provider in the contract differs dramatically from the actual speed on wireless devices. RostelecomAs the largest service provider in Russia, , offers rates up to 1 Gbps and higher, but over-the-air speeds can drop significantly. This isn't always the provider's fault; most often, it's due to the characteristics of radio waves and equipment.
In this article, we will take a detailed look at what speed is considered normal for different frequency ranges, as standards 802.11n And 802.11ac affect your home internet and why an old laptop can't deliver gigabit speeds. Understanding these physical limitations will help you set up your network correctly and stop overpaying for unnecessary features.
The difference between a wired connection and Wi-Fi is fundamental. While you can get a solid 900 Mbps with a cable, a wireless network will always suffer from losses due to interference, wall thickness, and the number of neighbors. The maximum theoretical speed of 5 GHz Wi-Fi under ideal conditions is about 866 Mbps for a single antenna, but reality makes its own adjustmentsLet's figure out what is considered normal and when it's time to sound the alarm.
The Impact of Wi-Fi Standards and Frequency Bands
The first thing to pay attention to is the wireless standard supported by your router and client device. Older models only operate in the 2.4 GHz band using the protocol 802.11n, are physically incapable of transmitting data faster than 150–300 Mbps, even under ideal conditions. In apartment buildings, this range is often clogged with neighboring signals, causing interference and reducing actual throughput to 20–40 Mbps.
Rostelecom's current tariffs require the use of the 5 GHz band and standard 802.11ac (Wi-Fi 5) or new 802.11ax (Wi-Fi 6). This is where high data transfer speeds are achieved. If you have a 500 Mbps plan and are connected to a 2.4 GHz network, you'll never see speeds above 100 Mbps, regardless of the quality of the cable in your wall.
⚠️ Note: Many older smartphones and laptops do not support the 5 GHz band. If your device does not see a network labeled "5G" or "_5GHz," it means its Wi-Fi module only operates at the 2.4 GHz frequency, and you should increase the speed beyond the standard's physical limit. n it won't work.
It's important to understand the difference between theoretical and actual speeds. A router manufacturer might list "AC1200" on the box, which translates to a combined speed of 300 Mbps on 2.4 GHz and 867 Mbps on 5 GHz. However, a single device cannot use both channels simultaneously for a single task. Actual speeds will always be 20-30% lower than advertised due to packet header overhead and transmission losses.
Speed limits for different tariff plans
To determine whether your internet meets the advertised conditions, you need to check your plan. Rostelecom offers a variety of options, and expectations should be realistic. Below is a table showing expected Wi-Fi speeds depending on the connection type and plan.
| Tariff plan (incoming speed) | 2.4 GHz band (real) | 5 GHz band (real) | Typical device |
|---|---|---|---|
| Up to 100 Mbps | 40–80 Mbps | 80–95 Mbps | Smartphone, tablet |
| 300 Mbps | 60–100 Mbps | 200–260 Mbps | Laptop, Smart TV |
| 500 Mbps | 80–120 Mbps | 350–430 Mbps | Gaming PC, 4K TV |
| 1 Gbps (Gigabit) | 100–150 Mbps | 600–800 Mbps | Flagship laptop |
Please note that for plans above 100 Mbps, the presence of gigabit ports on the router is critical. If the device's WAN or LAN ports are marked 10/100 Mbps, your internet speed will be throttled to 90–95 Mbps, even if your ISP offers more. This is a common mistake when using older router models, issued by ISPs several years ago.
With Gigabit plans and above, even in the 5 GHz band, it's rare to achieve a full 1000 Mbps speed over Wi-Fi. Limitations of the radio spectrum and network card drivers on the client device usually prevent the 800–850 Mbps ceiling. To fully utilize a 1 Gbps or higher bandwidth, a wired connection is recommended. Ethernet categories 5e or 6.
Factors that reduce wireless network speed
Why does my speed drop when I move away from the router? Radio waves are subject to attenuation and reflection. Walls, especially load-bearing ones with reinforcement, mirrors, and aquariums significantly weaken the signal. In the 5 GHz band, attenuation is even faster than in the 2.4 GHz band, so speeds in a distant room can drop significantly.
Another important factor is the number of connected devices. The router distributes the communication channel among all clients. If one user is downloading large files via torrent, while another is watching 4K video, the third device may not have enough bandwidth for comfortable surfing. QoS (Quality of Service) helps prioritize traffic, but it doesn't create extra speed out of thin air.
The influence of neighboring networks
In apartment buildings, up to 10-15 neighboring networks can overlap the 2.4 GHz channel. This creates a clutter of signals, forcing your router to constantly wait for the channel to clear before sending a data packet, dramatically reducing ping and speed.
Software issues shouldn't be overlooked either. Outdated Wi-Fi adapter drivers on your computer or router firmware may contain errors that prevent the hardware from fully exploiting its potential. Sometimes, a simple router restart or reset can restore normal operation.
⚠️ Caution: Placing the router on the floor, in a niche, or behind a TV can reduce speed by up to 50%. Antennas should be vertical, and the device itself should be located in the center of the apartment and elevated.
Diagnostics and speed measurements
Before calling technical support, it's important to conduct a proper diagnosis. A subjective feeling of "slow internet" is not an argument. Use specialized services for measurements, such as Speedtest.net, Fast.com or a built-in meter in your Rostelecom personal account.
The correct measurement technique looks like this:
- 📶 Disconnect all other devices from Wi-Fi (smartphones, TVs, smart bulbs).
- 💻 Move 1–2 meters away from the router to eliminate the influence of walls.
- 🔌 For a more accurate experiment, connect your computer with a cable and measure the speed. If the speed is low via cable, the problem is with your ISP.
- 📱 Then repeat the Wi-Fi measurement at the same location. The difference will show the wireless network loss.
When analyzing the results, pay attention not only to Download but also Upload and Ping. A high ping (>50 ms) with a normal download speed may indicate channel congestion or routing issues, which is especially noticeable during online gaming and video calls.
☑️ Check before contacting technical support
Optimizing Rostelecom router settings
Often, the router's factory settings are not optimal for the specific conditions of your apartment. By accessing the device's web interface (usually at 192.168.1.1 or 192.168.0.1), you can make changes that will improve the stability of the connection.
First, you should change the broadcast channel. In the Wi-Fi settings, find the "Channel" option. Instead of "Auto," try selecting clear channels. For 2.4 GHz, this is usually 1, 6, or 11. For 5 GHz, the situation is simpler—there are many channels there, and they overlap less often, but choosing a less crowded one can improve stability.
It also makes sense to check the channel width. For 2.4 GHz, it's better to set 20 MHzto avoid interference from neighbors. For 5 GHz, feel free to set 80 MHz or even 160 MHz (if supported by the router and client), which will significantly increase throughput.
When to think about replacing equipment
If your data plan is high, you've checked your settings, but your speed remains low, your equipment may be outdated. Routers manufactured more than 5-7 years ago often have weak processors that can't handle traffic encryption at high speeds and large numbers of simultaneous connections.
Modern standards require technology support MIMO (Multiple Input Multiple Output), which allows for the transmission of multiple data streams simultaneously. If your router has a single antenna (even a large external one), it is physically limited in speed compared to 2x2 or 4x4 models.
When choosing a new device, look for the Wi-Fi 6 (802.11ax) standard. This isn't just marketing hype: the new technology handles multiple connected devices better and reduces latency. For a home with a lot of gadgets, this is the best solution.
⚠️ Please note: Personal account interfaces and router models are subject to change. Always check the latest equipment specifications and available plans in the official Rostelecom app or on the provider's website.
Questions and Answers (FAQ)
Why is Wi-Fi speed always lower than cable speed?
Wi-Fi is a half-duplex medium; a device cannot simultaneously receive and transmit data at full speed, unlike a cable. Furthermore, the radio signal is susceptible to interference, fading, and signal degradation, which results in packet retransmissions and a reduction in effective speed.
Can a Rostelecom router deliver 500 Mbps via Wi-Fi?
Yes, it can, but only if your router supports the 802.11ac (Wi-Fi 5) or 802.11ax (Wi-Fi 6) standard, has gigabit ports, and is connected to the 5 GHz band. This speed is physically impossible at 2.4 GHz.
How do I know if I'm on 2.4 GHz or 5 GHz?
In Windows, click the Wi-Fi icon and select Network Properties. The "Properties" line will display the frequency (e.g., 2400 MHz or 5000 MHz). On smartphones, this can also be seen in the connection details.
Does the number of connected devices affect the speed?
Yes, it does. The connection bandwidth is shared between all active devices. If one device uses up 100% of the bandwidth, the others will get a minimum. The router switches between clients very quickly, but the physical bandwidth limit remains unchanged.