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How strong should a signal be over 3km?

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How strong should a signal be over 3km?

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
47 Reply
Re:How strong should a signal be over 3km?
2017-04-19 02:37:29
i use the same speed test at the location with the broadband as i do with the remote site and the remote site gets half every time. Is there a way to test the link between the cpe's?
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#22
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Re:How strong should a signal be over 3km?
2017-04-19 03:08:49

baldog wrote

Is there a way to test the link between the cpe's?


Yes, see Tools->Speed Test. Start a ST server on one CPE and a ST client on the other. This will show you the data speed on the wireless link from one CPE to the other (it is an iperf test running on the CPE).
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#23
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Re:How strong should a signal be over 3km?
2017-04-19 03:22:11
ok thanks i'll have to do that tomorrow when i can get to both sites. Will report back!
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#24
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Re:How strong should a signal be over 3km?
2017-04-19 03:29:50
You could remotely manage the opposite CPE, too.
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#25
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Re:How strong should a signal be over 3km?
2017-04-19 04:01:09
haha.....well i tried doing that and the software was terrible and doesn't seem to find them! seems more hassle than its worth trying to get that to work unless you want to walk me through it!! We've got a few open mesh routers we manage and they are plug and play web based management. Its a shame the cpe's arent like that. So my solution to being able to control them both is a laptop at the broadband end with team viewer to log on to a computer at the remote end!!
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#26
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Re:How strong should a signal be over 3km?
2017-04-19 05:33:01
You really should be able to access both the WebUIs from one site, then start the server on any CPE of the two, switch the tab / window to the other CPE 'i.e. the client' specify the previous CPEs IP (the server's IP), choose the type of test you wish to perform and hit start...

With regards to the actual data throughput you currently achieve I'd be reluctant that given the 17dB you could push more out of it...Perhaps in the 25dB range you could possibly get 'upto' 50Mbps real world data transfer, but seeing that you already cast a mast I can't see how you could gain an extra 8dB...

Selecting an appropriate channel and stepping down on the MCS (did you go the 12 route yet?) could push you up a further 1-2dB but that's just about it I'm afraid. See if you could improve the CPE height on the other site, too maybe?
Now serving finite customer via f(x)=AirTime/∞ on the 5Ghz band :-/
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#27
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Re:How strong should a signal be over 3km?
2017-04-19 06:03:11

baldog wrote

seems more hassle than its worth trying to get that to work unless you want to walk me through it!!


Sure. Why not?

You have one CPE in AP mode and the other one in Client mode, right? You are hopefully not using DHCP for their LAN network settings, are you? :)

If so, just type in the IP of the remote CPE in your browser's address field.


We've got a few open mesh routers we manage and they are plug and play web based management. Its a shame the cpe's arent like that.


Hey, the CPEs are enterprise class devices for power users, no Plug'n Play toys. :D But if you like the Plug'n Play way, what about PharOSControl?
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#28
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Re:How strong should a signal be over 3km?
2017-04-19 06:53:52

RTouris wrote

With regards to the actual data throughput you currently achieve I'd be reluctant that given the 17dB you could push more out of it...Perhaps in the 25dB range you could possibly get 'upto' 50Mbps real world data transfer, but seeing that you already cast a mast I can't see how you could gain an extra 8dB...


Correct, but the TX rate for the link did look pretty good IMHO.

To get an idea what can be achieved at 17dB SNR / -79dBm signal strength, here a quick test (no LoS, even not front facing the CPEs):





At 20/40 MHz channel width, fixed mode n:





20 MHz channel width:





Expect somewhat lower rates over 3km.
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#29
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Re:How strong should a signal be over 3km?
2017-04-19 16:47:24

RTouris wrote



Selecting an appropriate channel and stepping down on the MCS (did you go the 12 route yet?) could push you up a further 1-2dB but that's just about it I'm afraid. See if you could improve the CPE height on the other site, too maybe?


How would i select/change the MCS?
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#30
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Re:How strong should a signal be over 3km?
2017-04-19 16:52:00

R1D2 wrote

Sure. Why not?

You have one CPE in AP mode and the other one in Client mode, right? You are hopefully not using DHCP for their LAN network settings, are you? :)

If so, just type in the IP of the remote CPE in your browser's address field.


I've set the AP in its normal setting mode and then set the remote point up as client ap which plugs into the wan port on the router. When at the remote site im able to access the client ap however i'm not able to access the main ap. Is there a special way to do this?

thanks for giving me an idea about the speed to expect. I'll try turn on the 40mhz again and see if that increases things a little.
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#31
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