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gianrico
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3.6 Km Ptp Link -- bad RX ccq and BW

Thu Apr 11, 2019 4:21 pm

Good morning
I was wondering if someone could give me any suggestions to improve my situation.
PtP.png
In theory, I should have a signal strength of around -65db.
The screenshot can only show a shot, but the RX values actually keep changing (ccq ranges from 29% to 70% and bw can go up to 86.6Mbs)
TX is quite stable around those values.

The thing that I cannot explain very well is why the link is so asymmetric.
It is bad in the direction that I am actually interested to. RX

Q1) Would a bad alignment create situations like above? Should not I see the same on both sides if the link is badly aligned?
Q2) Would interference create such a situation?

Any advice to troubleshoot the link are appreciated

many thanks
gianrico
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AminYounessi
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW

Mon Apr 15, 2019 9:39 am

Hi Gianrico,

Your link physically fine tuned because of the signal strength that you reach in the picture and the Noise floor is -101 dbm so it means the Noise is less, did you use 802.11 and test a bandwidth of the link?
 
mistry7
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW

Mon Apr 15, 2019 1:00 pm

What Devices you are using?
I Think Antennas are too small for this distance
 
gianrico
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW

Mon Apr 15, 2019 5:52 pm

Hi
thanks for your answer
The antennas are both like this one:

https://www.sicetelecom.it/prodotto/wir ... -atrh0595/

They are 23dbi have an rb911g-5hpacd inside.
 
InoX
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW

Mon Apr 15, 2019 6:05 pm

1. check alignment
2. check Current Tx Power
 
GuJack20
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW  [SOLVED]

Mon Apr 15, 2019 9:00 pm

To me seems also too low a signal for 3.6 km and 23dbi antennas. Alignment is the first thing to check. Than what is happening around you, frequency usage, etc.
--Do you remember that guy who gave up? Neither does anybody else!
 
InoX
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW

Tue Apr 16, 2019 12:44 am

what is happening around you, frequency usage, etc.
This will not resolve the main problem - signal to low.
 
GuJack20
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Re: 3.6 Km Ptp Link -- bad RX ccq and BW

Tue Apr 16, 2019 7:42 am

what is happening around you, frequency usage, etc.
This will not resolve the main problem - signal to low.
That is why I wrote: Check alignment (meaning: and when it is fixed, the signal should be higher) THAN check what is happening around you.
--Do you remember that guy who gave up? Neither does anybody else!

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