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rgroothuis
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wAP WIFI max distance and how to improve

Thu Apr 29, 2021 10:21 am

I'm having a number of RBwAPG-5HacT2HnD (wAP) devices and when testing the WIFI signal I notice that when I get further away at about 10 meters the performance drops to really low values.
- Beside the wAP AP I measure about 96 Mbit/s on the iPhone.
- When about 10 meters away, I measure about 4 to 5 Mbit/s

When having a a clear vision on the AP, is it normal that this bandwidth drops that much?

Some screen shots of the current config:
Screenshot 2021-04-29 at 09.17.50.png
Screenshot 2021-04-29 at 09.18.23.png
Screenshot 2021-04-29 at 09.18.15.png
Screenshot 2021-04-29 at 09.17.59.png
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anav
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 1:48 pm

Wifi signals are allergic to the colour orange??
There are many settings on MT wifi suggest you start here.
https://mum.mikrotik.com/presentations/ ... 209343.pdf
 
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 1:52 pm

👏👏👏
 
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normis
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 2:28 pm

Looks like you are using CAPsMAN. To debug, do a complete system reset and try the same test with factory (non capsman) settings.
 
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anav
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 4:40 pm

I finally concur with Normis,,,,,, capsperson should not be used when learning about MT wifi at the beginning.
Once one understand how the wifi works and one wants to make the configuration more complex then necessary by all means go down the evil path..............
 
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 4:49 pm

... capsperson ...
I want CAPsWOMAN ;))
 
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 4:51 pm

... a number of RBwAPG-5HacT2HnD (wAP) devices ...
how many and at what radius?

all with same SSID?

self-interferencies?
 
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bpwl
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 5:52 pm

Well to be a bit more technical , I would like to suggest some steps.

- First; don't use the data speed as diagnostic test. It's too indirect as indicator for improving the range of the wAP. It is OK as end-result test, but not precise enough as a diagnostic tool.
- What is the speed you mention? Start with the interface rate as test parameter. It can be found in the "Registration" Things like "144Mbps-20MHz/2S/SGI" should be there.
- MT does not tell the MCS encoding used, but it can be found in http://mcsindex.com. With 20 Mhz channels, even with dual stream (2S), and short guard interval (SGI), 144Mbps is the max.
- CCQ quality is an important parameter. With lower CCQ the interface rate will step down the list. Low CCQ can be due to obstructions (walls) or interference (other AP or client), or too weak signal.
- a wAP goes further than 10 meter normally. But the client is usually the weakest transmitter! Be sure to concentrate on the correct cause for the lower rate.
- The Netherlands housing concentration usually leads to crowded wifi cells. Check what else is using your channel. MT is not able to pick the best channel for you!
- The physical placement of the wAP is also important.
- 2.4GHz should go further than 5 GHz but usually is overwhelmed by neighbors. For 5 GHz you use the "indoor only" frequency for Europe. You test 10 meter indoors, with a clear view on the AP? This really is a "groot huis" then.
- Try the 5500 (channel 100) and up frequencies, which can be used indoor and outdoor. They have 4 dBm more power, and go 60% further. Yes these are DFS channels !!!
[admin@MikroTik] > interface wireless info country-info netherlands
  ranges: 2402-2482/b,g,gn20,gn40(20dBm)
          2417-2457/g-turbo(20dBm)
          5170-5250/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(23dBm)/passive,indoor
          5170-5330/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(20dBm)/dfs,passive,indoor
          5250-5330/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(20dBm)/dfs,passive,indoor
          5490-5710/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(27dBm)/dfs,passive
 
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 5:57 pm

I approve all, It's all right, but:
- Try the 5500 (channel 100) and up frequencies, which can be used indoor and outdoor. They have 4 dBm more power, and go 60% further. Yes these are DFS channels !!!
some devices support only 5170-5330!!!
 
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bpwl
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Re: wAP WIFI max distance and how to improve

Thu Apr 29, 2021 6:06 pm

Yes. I hope the iPhone does handle it.
And the "play dead" time for the weather channels (5600-5640) is a full 10 minutes, after every change or startup. Selecting "10min CAC" for DFS Skip can avoid those.

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