WiFi signal strength expressed in dBm and the number of bars in the bar in wines

Question

Hello, I was looking for answers to a few questions about the signal strength and dashes shown in win 7 on the bar at the bottom, but I did not find: 1 Why on a desktop computer + at signal strength - 70 dBm measured with inSSIDer, there is only 2 range bars and internet can get cut sometimes...

jimasek · Answer

Signal strength around -70dBm and below this level is a real problem with stability.

pablolinda · Answer

And how to explain the fact that on a laptop it is lower, because -74 sometimes even -79 dBm and there are 3 lines of range and the internet is flashing all the time without a problem. Problems start above -83 dBm? In addition, the same laptop in a different place in the city with the same signal strength where the ether is very clogged and practically free was only the 4th channel also receives the Internet on a distance of about 40 m and through 2 walls of the spot spot?

jimasek · Answer

There is no need to compare different devices and lines in the system. The limit is -70dBm where at this signal value the connection may or may not be 100% unstable. Please note that many electromagnetic disturbances are not visible in inSSIDer and different models of wireless devices can get along better than others.

pablolinda · Answer

Then what better to get along with the livebox? Everything was fine until the neighbor had to move it to another place because so far the signal was -64 and there were no major problems.
As for the dashes in the system, I thought that if both systems are the same, the dashes should change with the same dBm value. In the stationary one, when it jumped to -69 dBm, it jumped to the third line, which in the laptop was already the fourth.

Added after 6 [minutes]:

And one more question, would it make sense to change such an antenna allegro ready

I would like to add that for the stationary, only one scania is an obstacle because the antenna from this grate hangs outside and the laptop achieves such signal strength through 2 walls.

Nagus · Answer

1 Mapping the signal strength to dashes is the programmer's whim from the controller. They set up a bit different thresholds.
A laptop may have a slightly more sensitive receiver and therefore less reception problems.
2 The speed is changing because it's a radio. The conditions in the radio environment are changing all the time. The more advanced the modulation, the better the signal it needs (with higher S / N ratio). At the moment, there is more noise = worse signal = lower speed.
The controller does not need to show the actual speed available.
3 The reasons may be different. The lower the signal level, the more significant the noise is, so the measurement is with greater error. There may be a greater proportion of reflections in the radio signal (in the absence of direct visibility of the antenna)

m.jastrzebski · Answer

The number of strokes does not suggest anything. There are devices in which you can define yourself at what signal level, how many dashes (here are LEDs).

pablolinda · Answer

Thanks to everyone for the explanation. And someone will advise or comment on this question?

pablolinda · Answer

Someone will tell you if you can replace this antenna with a biquad? I corrected the image embedding. Please follow the instructions on the forum in the future: / salmon /

bogiebog · Answer

Try the tplink antenna, 8dbi, the one on the stand.

pablolinda · Answer

Maybe I did not express myself precisely, currently there is such an antenna tp link http://www.tp-link.com.pl/products/details/?model=TL-ANT2406A and I wonder if the antenna gain would increase if I used a biquad antenna and I found such a ready on the Allegro for PLN 10

and I would not like to invest too much in buying some more expensive antennas because the person using this connection is not very dependent on the constant use of the Internet, so if it can be improved cheaply, yes, and if not, it is to stay as old as it is and will only use it when the connection will be stable because the internet is only for entertainment.
And this 8dbi is a stick, I would have to think about a stand that could work outside, and so I would only solder the cable to this biquad from this paneling, and the panel is supposed to be better than these sticks, so the seller advised me when I bought that tp panel link.

And from what I deduced, a longer antenna does not always give a better range http://waihung.net/tp-link-2-4ghz-8dbi-indoor-omni-directional-antenna-tl-ant2408cl/

bogiebog · Answer

Narrow beam, You need to twist the longer antenna for better reception WIFI antenna - The dependence of the antenna beam angle on the gain

pablolinda · Answer

Unfortunately, the signal has worsened recently and so I thought that maybe the improvement of the link would be if I used TP-LINK TL-WA5210G because I would not have a loss on the cable to the network card and the additional antenna is twice as powerful and could possibly visit the entire balcony in looking for a better coverage, someone will advise if there is a chance to improve this link using this equipment?

pablolinda · Answer

In order not to assume a new topic and this is the case, I will write what problem I have with the configuration of the nanostation 2 antenna in connection with the livebox 2 via wi-fi. Namely, after connecting to the network as a station, there is no internet, and as in the Network tab and switching from static to Dhcp, I can not go to the antenna at all. Will someone help how to configure it correctly? As I previously connected this antenna with 543g tp link, I did not have such problems and the internet worked normally.

WiFi signal strength expressed in dBm and the number of bars in the bar in wines

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