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Discussion in 'Networking' started by Tekwanabe, Jan 6, 2013.

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  1. Tekwanabe

    Tekwanabe Thread Starter

    Jan 6, 2013
    Soon there will be an additional internet provider operating at a rental property. The 2 modems will be located in a closet along with their respective wireless routers, which will be Asus Black Knights. The routers will be inches apart. Will the routers interfere with each other? Not able to get a definitve answer yet.
  2. foxidrive

    foxidrive Banned

    Oct 20, 2012
    Wireless is a black art. Mostly you try it and see how it goes.

    But in theory they will affect each other. To what degree is the question, but ensure that one operates on the highest channel and then other operates on the lowest wireless channel - taking into account other wireless signals at the house (from next door etc).
  3. etaf

    etaf Moderator

    Oct 2, 2003
    First Name:
    use xirrus to see what channels are in use in the neighbourhood

    channels 1, 6 and 11 do not overlap - so they are the most common channels in use

    as suggested see if you can set the routers up to use those channels say, one on 1 and one on 11

    Australia can also use channel 12 and 13 - most are set to the US standard which can only use 1-11 - but sometimes the adapter in devices are US and do not pick up the 12/13 channel - sometimes adjustable in the properties

    Run Xirrus Wi-Fi Inspector
    Download and install

    If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC
    Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and install the program.
    You will now need to take a screen shot and copy that back to the working PC and attach the screen shot in a reply on the forum here.

    Direct link to the program is here http://info.xirrus.com/Wi-FiInspectorConfirmation.html

    {If the above link does not work heres another link http://www.pcworld.com/downloads/file_download/fid,77196-order,4/download.html}

    Then run and install the program - on a wireless enabled PC/Laptop
    if you get an error - You need will need to have NET Framework installed for the WiFi Inspector to function.
    On windows 8 - (i do not have windows 8) but, it would appear that, When you first try to run, you may get a message that .net framework is needed, and included in that message is a link to download/install.

    Run the program

    A user guide is available here http://www.xirrus.com/cdn/pdf/Xirrus-Wi-Fi-inspectorguide-1-2-1-RevB-6.aspx

    post a screen shot of the program running.
    if there are a lot of networks showing can you click on "networks" top lefthand area - so we can see all the network information.

    post which SSID name is yours, its located in the list, under network "Adapter Name" (1st column)

    To post a screen shot of the active window.
    1) hold the Alt key and press the PrtScn key. Open the Windows PAINT application (Start> All Programs> Accessories> Paint) and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.
    2) if you are using Vista/Windows 7 you can use the "snipping tool" which is found in Start> All programs> Accessories> Snipping Tool

    To upload the screen shot to the forum, open the full reply window ("Go Advanced" button) and use the Manage Attachments button to upload it here.
    Full details are available here http://library.techguy.org/wiki/TSG_Posting_a_Screenshot

    For a reliable (or robust as the Xirrus user guide says) wireless connection you need a signal of about -70 dBm or better. "A desirable signal level for a robust Wi-Fi connection will be green".
    note: the signal level is a negative number, so for example -88 is worst and -40 is better

    If you are using the Mac OS then use http://www.istumbler.net/

    if you want to optimise base station position and signal strength / dead spots use
    http://www.chimoosoft.com/products/apgrapher/ which has a graph function to monitor signal
  4. dannyn


    Nov 8, 2007
    Etaf is 100% correct on this one, and that is good for the G band but I want to expand a little. It does look as if the router you specified is dual band(meaning operates in the 2.4GHz and 5GHz range simultaneously). Without the model number, I cannot be certain of this though. If that is the case you will need to use on the 2.4GHz band 1,6,or 11and on the 5GHz band has 23 non-overlapping channels. The software above will help you find those.

    In case you wanted to see a more visual representation of this, this is a pretty decent graphic where you can see how the channels are stepping on each other. http://upload.wikimedia.org/wikipedia/commons/9/93/2.4_GHz_Wi-Fi_channels_(802.11b,g_WLAN).png

    Hope this helps!
  5. Tekwanabe

    Tekwanabe Thread Starter

    Jan 6, 2013
    Thanks to all responders. You are great. Regards, Arn
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