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Router connection problems

Discussion in 'Networking' started by Mav71, Dec 29, 2012.

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  1. Mav71

    Mav71 Thread Starter

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    Hi. I am using an Asus wireless router and a Netgear wifi adapter for the computer. When I am using the internet, it keeps disconnecting randomly and when I check the wifi adapter sometimes my router's is in the available connections list and sometimes it isn't. It reconnects on its own after some time, sometimes as soon as a minute and sometimes as long as 20 minutes. At first I thought something is wrong with the wifi adapter so I switched on my laptop and noticed that the same was happening to the laptop as well. My desktop is about around 18-20 feet away from the router. I've tried changing the channel of the router to an isolated one but that doesn't help. It is very very infuriating. Any suggestions as to how I can fix that? I've connected the laptop with the ethernet wire and it works fine, so its not the connection.
     
  2. etaf

    etaf Moderator

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    sounds like wireless interference OR a faulty adapter

    how many devices are connected wirelessly ?

    lets see an xirrus screen shot with the adapter and PC in normal position

    ------------------------------------------------------------------------
    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
    ------------------------------------------------------------------------
     
  3. Mav71

    Mav71 Thread Starter

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    Thanks etaf. Here's the screenshot.
     

    Attached Files:

  4. etaf

    etaf Moderator

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    so its not wireless interference

    but you are on channel 12 and the US does not support channel 12 , although you are in a country that does - its possible the equipment is looking for channel 1-11
    i would change the channel in the router to use
    1, 6 or 11

    BUT you do not have a strong signal anyway - 82 will not give you a robust connection - you need to have -70 or better - note the negative value

    describe your setup- make and model of the router - does it have an external aerial
    can the router be moved a few feet

    exact model of the adapter - does it have an aerial

    what other devices do you have and what type of signal do they get
     
  5. Mav71

    Mav71 Thread Starter

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    the router has an external aerial
    the adapter is a Netgear WNA1000-M adapter
    it doesn't have an aerial
    No the router can't be moved a few feet
    The Router is
    Asus RT-N10+
    DD-WRT
    .
     
  6. etaf

    etaf Moderator

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    try moving this 90 degrees , that can often help
    and changing the channels can help
     
  7. Mav71

    Mav71 Thread Starter

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    Tried doing that, didn't work. A friend of mine, who I'm temporarily unable to contact again, mentioned there might be a setting that needs to be changed somewhere, do you have any idea what it could be?
     
  8. etaf

    etaf Moderator

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  9. Mav71

    Mav71 Thread Starter

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    Tried the first one and it's not working, and the last two links need a spare router, which I don't have access to.
     
  10. etaf

    etaf Moderator

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    I only meant the links to refer how to adjust the power output
    whats not working,
    the link,
    changing the setting,
    or
    it did change the power setting OK but the signal is still too weak
     
  11. Mav71

    Mav71 Thread Starter

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    The signal is still weak
     
  12. etaf

    etaf Moderator

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    not much more can be done

    changing channels
    increasing the transmit power
    moving the aerial
    moving the router
    moving the PC

    changing the adapter to one with a better / replaceable aerial
     
  13. Mav71

    Mav71 Thread Starter

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    Thanks etaf, I'll see what I can do
     
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