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No network connection in certain parts of the house

Discussion in 'Networking' started by Raimee, Dec 29, 2012.

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  1. Raimee

    Raimee Thread Starter

    Joined:
    Dec 29, 2012
    Messages:
    1
    Hello.

    I am experiencing some strange network behavior. I can't connect to the wireless modem from most parts of my bedroom. I can connect to the modem from the hall next to my bedroom. Can't from my brothers bedroom, but can from my parents' bedroom. All using the same laptop. Once I connect to the modem, and move into one of the rooms where I can't connect, I do stay connected. I can ping the modem, but I get very high results (800-1500 ms), while I get 1-5 ms in other parts of the house. I only get extremes, good connection or very bad connection, haven't found anything in-between.
    I've tried changing the network channel (I've tried 1, 6 and 11), but that didn't help at all. I've been away from home a few days and these issues started while I was away. Nothing obvious changed in our house while I was away. Just that my sis got a new phone (but can a phone honestly be responsible for this?). And my laptop has found a new modem in the neighborhood.

    Previously everything worked fine. I had great internet all over the house. Something is just blocking the signal.

    I'm not completely sure of this, but I noticed my laptop reacting slow while using it in my bedroom, one of the rooms without network connection.

    What could be the issue? I don't really know much about wireless things, so if you need more information, tell me how to get it, and I'll get it for you. The modem is a D-LINK DIR-655.

    Thanks in advance for any help :)
     
  2. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,421
    First Name:
    Wayne
    does the router have an external aerial at all
    and
    is it just your PC that is having this issue ?

    can we see an xirrus screen shot - from the locations - if you post more than one make sure we know which is which

    NOTE the comment about a signal of -70 below

    ------------------------------------------------------------------------
    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.

    http://www.xirrus.com/Products/Wi-Fi-Inspector.aspx
    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.
    OR
    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

    Note:
    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
    ------------------------------------------------------------------------
     
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