Wi-Fi network channels in the 5 GHz band

Question

1. Hello, maybe a stupid question, but I wonder if the Wi-Fi network operating in the 5 GHz band in Poland has channels divided so that there are no c...

smario11 · Answer

If you insist, you can operate at 4900-6100mhz, but usually the devices will not connect

Fotodetektor · Answer

Change the country on your router to USA.

KOCUREK1970 · Answer

And Poland is the USA? - Does a colleague know what the threat is?

Fotodetektor · Answer

I'm listening? The police will come and take your router from home and put you in for 10 years ?! It is possible to choose the country and you can take advantage of it! As if something else was blocked. You are not interfering with the equipment in any way illegally.

KOCUREK1970 · Answer

There is no certification of the WiFi network for 2.4GHz and 5GHz, because these are free bands, you do not need a license, you only have to use devices with the CE standard, not exceeding the permissible transmission power. The CE standard obliges to maintain the appropriate purity of the emitted signal. Will you also drive 400 km / h on the motorway in Germany - after all, it's allowed ... In the instruction manual of the equipment, it is clearly stated whether or not the equipment is allowed or not and how to use it. You are disrupting the operation of other devices by your actions.

Fotodetektor · Answer

Theory is important and practice verifies.
If a guest lives in a house near the forest, who is disturbed by what ?!

A grain of interference without LTE interference bag for SAT, DVB-T.
You can multiply.
I would be more on the power of the rotors than on the transmit channel.
You know what the standard is, and there are those that have CE and regulation up to 1W.

Anyway, even in the licensed bands of the Internet, strange things are happening and which I will not write

KOCUREK1970 · Answer

@Fotodetektor All this is agreement - only this does not change the rule that you do not use something that is not certified in Poland (the equipment has the US band, because it is produced for such a market) - but common sense and our health should be the most important.

Fotodetektor · Answer

Amen. Finally, I will add that changing the channel does not mean that the router has more power in the sense of 100 mW.

Nagus · Answer

In WLANs, the channels overlap by definition. In both bands, the channels are 5 MHz apart. In the 5GHz band, every fourth is used to limit the influence of adjacent channels. The spectrum of the WLAN signal does not end like a cut with a knife, tails can drag themselves along a couple of MHz. Yes. In EU, the remaining channels can only be available in automatic mode, or manual selection has to be automatically canceled after the occurrence of appropriate conditions. Not true. Radio parameters of devices that can be used without a radio license are specified in the regulations of the relevant ministry, most recently it was the Ministry of Administration and Digitization (Journal of Laws, item 1843 of December 12, 2014) and the Telecommunications Law (in this case, Article 144 (2)). point 5). Theoretically, there are penalties, but in a country where MPs steal and still boast about it on TV, who would care ...

Anonymous · Answer

Legal liability, fine. This is not a theory at all, it is enough for someone (institution, company) to be disturbed by something and reported where it is needed. Therefore, I would not urge you to act against the law. Added after 37 [seconds]: The MP is not an ordinary person, the latter will get 4 letters each.

hubig · Answer

Regulations, regulations, requirements, requirements, and life itself.
Oddly enough, smartphones (legal, officially purchased) can somehow be configured in such a way that they communicate on "non-European" channels on the 5 GHz frequency. For example, my smartphone (Samsung Galaxy A40), after setting the operating mode to hot spot / access point (the so-called WiFi router), sets the channel, e.g. to 149 and the D-Link router, with the country set to Poland or Europe, cannot to communicate with it, because with these settings it does not support this pseudo-American channel. To make it funnier, the smartphone does not have the option to manually set the channel (to "allowed in Europe"). Samsung smartphone tech support doesn't do anything about it (I reported). It is similar with a laptop (HP Elitebook), also officially bought in our country (not in China, not through A..express portals) and an operating system configured for Poland - it easily connects to a smart on channel 149.
So, reprimands, or instructions in the style of "in Europe this range must not be used" is a bit of a coquetry.

Interesant · Answer

... No coquetry, just the phone manufacturer: a) When writing the "He took the easy way ..." b) Looks to customers in the teletechnical group (Installers, IT specialists) Ps. Just because you have legally acquired the equipment is not the same as using it illegally. You can buy an anti-radar legally, but you can only transport it in a car when it is disconnected from the power supply. Not to mention cars with a maximum speed hen hen far to the right of the legal 140 km / h (I will not even mention 50 km / h).

Anonymous · Answer

Regarding the UNII-3 (RLAN Band3) channels in Poland, I would suggest taking a look at ECC ERC Recommendation 70-03 (update 12 February 2021) and in REGULATION OF THE COUNCIL OF MINISTERS of 27 December 2013 on the National Frequency Allocation Table (updated March 16, 2021)

hubig · Answer

That doesn't relate to the heart of the matter, but I can't help but make this comparison not very accurate. While the speed in the car is decided by the driver and has the technical ability to use = drive at the speed permitted by law, for example, the smartphone user I mean (WiFi 5GHz, channel eg 149) cannot communicate wirelessly on another, " legal "channel. What's more, the average electronics user has no idea which channel the devices communicate with each other. So by running a hot-spot on such a smart and connecting to it from a laptop (a set of devices from my example - I am forced to use it myself), I willingly-accidentally operate on a channel with "dubious legality". Surely there will be an answer that ignorance of the law does not release you from liability ... So buying the equipment would be appropriate then not to use it for certain "illegal" purposes ...

Anonymous · Answer

And that is, unfortunately, the crux of the problem. It could be that only the 2.4GHz band was available and then you could actually know nothing and use wifi (although not completely). Today, wifi systems have become very complicated and here, without knowledge of technology and detailed knowledge, it is sometimes difficult to operate your devices effectively. Similarly with LTE.

bobycob · Answer

The 2.4 GHz band also has a different number of channels available depending on the country. A device configured for the USA will not find an AP on channel 13 for anything.
Just so that the user does not have to think about it, the driver retrieves information about allowed channels from the location. Users unaware of this when choosing a location other than the actual one accidentally end up with WiFi problems.