RB433 not picking up proper signal

Support General
1

Hi Guys

I am having a problem with a rb433. Here the problem. I have setup 2 rb433’s now and they seem to only pickup my rb’s & maybe one other signal close to me. I do however pickup wisp signals but no other ctwug connections. I have tried different grids, different lmr cables, different R52hn cards, another network cable, 2 different pigtails and now even new power supplies and poe injectors. The grids are even facing different direction but i still only pickup my links. Only thing i am thinking maybe could be wrong is the lmr cable to pigtail not tight enough. i only hand tightened it. Anybody that can maybe give some advise.

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Wlan2.jpg1680×1010 228 KB

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In Winbox, Wireless- Interfaces, double-click whatever your interface is called, go to the Wireless tab. Set as follows:

  • Scan list = 4900-6000
  • Wireless protocol = Any
  • Frequency Mode = Superchannel
  • Country = Ireland

Once this is applied, scan again

3

Stiaanm. Simlar results. Only finding links either connected to me, pointing to me or passing by me. Nothing else.

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Check protocols too i had a similar problem once and band too AP could be in N and station side in A…just my 2 cents

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I have changed the band setting to just about everything even the protocols. Still nothing but thanks all advise im open to as im struggling with this.

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What CTWUG SSID are you trying to pickup?

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One 27di grid is pointing towards delft/mplain area and the other is a 31dbi pointing to parow side.

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Could this be related to power? Current setup is 2 r52hn cards in the rb433, 1x31dbi grid and 1x27dbi gid. The board is being powered by the poe lan port that runs to a poe injector with a 24v 3A power adapter. Do you think perhaps i should run the power straight to the board instead of via lan cable? Or could it be something else as it is picking up some signals?

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Hi @Gekido

From what I can see your hardware is working properly, otherwise you would not have picked up any other links pointing at you or passing by you.

I can think of 2 things that may be happening:

  1. You simply do not have LOS to the antennas you are searching for.
  2. Your polarity is wrong. Have you tried turning your antenna 90 degrees?

Regards.

2 Likes
10

Hi Pilgrim

I have not tried the 90 degrees yet. I am busy with links but not at the moment so not looking for anyone specific. Just testing cause this is the second rb433 i have tried and im getting the same results and the minute i plug in a groove on these grids i pickup like alot of people or ctwug ssids.

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Gekido we did discuss this at the training, on the 31dbi grid is your feed aligned correctly? Please post a pic.

Looking at the scan I noticed two things

  1. You are picking up your own backbone link at 62 this should be between 30 and 50 in most cases
  2. Not a lot of ssid
    a. seems you polarity could an issue(as pilgrim stated)
    b. lmr or pigtails are the problem

Test lmr and pigtail by doing a freq scan if you mostly see 0.0 it could that you cables are the problem send a pic aswell

feed should be alingend as follow (((((!))))) and not like this (((((–)))))

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Hi Ogon

Yes we did discus. I have however put on 2 working grids from someone else to rule out the polarity issue. Ok will do the frequency scan and post. Thanks Ogon.

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Here you go Ogon. Does it mean new Cables then?

Freq scan 1.jpg1680×1010 224 KB

Freq scan 2.jpg1680×1010 226 KB

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http://ctwug.za.net/gekido 5600

Icasa asked us to please stay away from 5590 to 5700, can please look at that link and find a new frequency.

Looking at the frequency usage it looks like it could be lmr or pigtail or maybe your area is just not wifi active

2 Likes
15

Will sort out that 5600 link Ogon. Will give these lmr cable a go. Like i said when i use a groove it works. pickup allot of people, when i use the rb433 no joy.