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Sper Gua to understand and improve the Wi-Fi of your home.

Wi-Fi

Wifi

Let's admit it, unless you live in a big city or a fairly busy place, you most likely don't enjoy fiber optic in your home, and even if you enjoy it, what is even more likely is that the router assigned by the operator is not up to your network, much less of your Apple devices.

IOS and Mac devices have been improving their wireless connection chips generation after generation, so much so that since last generation they comply with the latest standards for wireless connection, specifically we talk about the Wi-Fi connection and the 5GHz band with the 802.11ac standard.

Wifi

As we see in this description, starting with the iPhone 6 and 6 Plus, the most modern standard began to be supported 802.11acHowever, this has a trick and it has not been until the iPhone 6s and 6s Plus (and iPads from Air 2) where you have introduced MIMO technology (Multiple Input Multiple Output) that substantially improves the speed at which data transfer can reach by having several antennas to send and receive packets simultaneously.

Generally, unless you live in an area like the ones I have described before, it is most likely that your router does not even broadcast in the 5GHz band, this also implies that it will not be compatible with the 802.11ac standard, and so so much you cannot enjoy the maximum possible wireless speed, so in this article we explain each technology point by point and what points you should take into account when buying a router.

What does that mean double band? 2’4Ghz or 5GHz

Wifi

It is completely normal that with so many numbers and letters combined, both 802.11 a / b / g / n / ac, so much MIME and so many GHz let's just make a mess and those who understand less are frustrated, but all this is simpler than it seems, I will try to explain it in a simple way.

Before we start talking about the available bands and the characteristics of each one, we must know what the Wi-Fi bands are. The Wi-Fi bands are the frequencies at which the transmitter emits Wi-Fi waves to be received by the receiver, so that a connection in a band is made both transmitter and receiver must be compatible with the desired band.

It will have sounded like Chinese, right? Let's give an example; One could say that the data or data packets (the information that circulates through these frequencies, through our Wi-Fi) are comparable to airplanes, and that the different bands or frequencies are comparable to the flight height.

So let's say that the band of 2’4GHz is a flight height close to the ground and that of 5GHz is a higher one, what does this imply? Many old planes are not able to fly at a certain height (many relatively old devices are not compatible with the 5GHz band) so they must fly at a lower height if they want to move, this is mixed with that many flight companies have relatively old planes (Many houses and companies have routers that only work in the 2'4GHz band), this makes the lower flight space so saturated with airplanes that it is difficult to fly without accidents, however, more modern airplanes can reach a greater height (the most modern devices are compatible with the 5GHz band) and there are many fewer airplanes flying, this implies that there are many fewer accidents, it is an unsaturated airspace in which airplanes have their space and do not They annoy each other.

Perhaps you have been a little confused with the comparison to airplanes, to see if after that the real theory is easier for you to digest; Most of the routers are not modern enough to emit in the 5GHz band, this implies that in a block there can be quietly (without exaggeration) 30 routers emitting Wi-Fi waves at a frequency of 2.4 GHz and with lucky 3 of them will broadcast in the 5GHz band (unless you live in a large city where the arrival of the fiber has forced to establish more modern routers), what happens then? Since those 30 Wi-Fi transmitters will cause saturation in the band, this can be verified by scanning with our laptop or smartphone and seeing how we have an endless list of Wi-Fi networks within our reach, as there are so many of these networks interfering with each other causing interference and, in many cases, intermittent signal losses (instability in the network).

That is why the 5GHz band is so precious, it is a band that has few aggregates for now, but the routers are not the only ones that broadcast in the 2’4GHz band, mobile phones and even microwaves they emit signals on this frequency, this makes for example that if you activate the microwave, the devices that are close to it will have greater difficulty to achieve a stable connection with the router, and this despite the fact that the router can broadcast on 11 different channels of the band of 2'4GHz (it could be said that they are different heights within an airspace), despite this and that our router automatically changes the channel to avoid interference, this will not be the only router that does it, therefore we continue in them and we are surrounded by devices that emit in the band of 2.4 GHz.

For another pate, the band of 5GHz not only has greater stability by having less interference but admits higher speed data transfer, while the 2.4GHz band supports a maximum of 450Mbps in its most modern standard, the 5GHz band is able to achieve a transfer speed of 1,300Mbps, more than double, no doubt a notable improvement over the other band with the advantage of not having interference problems with the Microwave or other devices.

However, not everything is gold, the 5GHz band has a much smaller range and it has more difficulty to penetrate physical obstacles such as a wall, it could be said that under the same conditions, a wave emitted in the 5GHz band is 1/3 of the range of a emitted one in the 2'4GHz band, that is The most advisable thing today is to make use of devices compatible with the “Double Band”.