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Linksys WRT54G v.2.0 firmware v3.03.6 - Range issue !

Discussion in 'Networking Issues' started by ALT3R, Jun 30, 2005.

  1. ALT3R

    ALT3R Network Guru Member

    Hi,
    Please help with range issue on this router!
    In about 10 meters away the connection is falling to low, 2Mbs or so...
    Anything to do to improve this situation? Any third party firmware that can help?
    Thanks very much
     
  2. Guest

    Guest Guest

    What is the path between the two? Remeber line of site!
    You need two 'point to point' antennas to get a better signal.


    William
     
  3. ALT3R

    ALT3R Network Guru Member

    range issues... continued...

    The line of sight is through the floor, the PC is located on the ground floor and the router to the first floor. The distance between the router and the pc is less than 8m, at this distance the line of sight shouldn't be a problem. Curious is that I obtained the same speed (low - 2 bars on the display) using a reflector with a pc located 15m or so and the line of sight being through 5 walls!!!!!!!!!! However this solution seems to work only horizontally, despite the fact that I spent countless hours to orient the antennas...
    Thanks for reading and help...
     
  4. Guest

    Guest Guest

    Re: range issues... continued...

    Some things you need to understand about radio wave propagation.
    When your antenna is pointing up, the pattern is like this:
    http://mt-umunhum-wireless.net/Images/Radiate.png
    The pattern is like a donut viewed from the top.

    If your second PC is directly under the first, you will get a very low
    signal. I think this is what is happening.

    If you flatten one antenna you must flatten to other one. Flattening
    the antenna will change the polarations from horizontal to vertical..
    Both units should be the same.
     
  5. ALT3R

    ALT3R Network Guru Member

    still LOW !

    First I must say big THANKS for your help and time.
    I tried again after reading your suggestions but nothing changed. The second PC is not under the router, it is to an angle of 45 degrees approximately... What I don't understand is how the two antennas of the router work. Must both be vertically or horizontally oriented or not? I am asking this because I have to keep one antenna with my home-made reflector for that PC located 15m away. That PC doesn't require anything but Internet connection, so the LOW level is ok. The PC located on the ground floor needs a far better connection because I want to use it as a Home Theater PC. This means I want to be able to play video files located on the "server" which is next to the router. Being just few meters away, I never imagined that it will be so difficult to obtain a decent connection.


    Dan
     
  6. Guest

    Guest Guest

    Re: still LOW !

    A few question. First what is the make up of the floor ( wood,
    concrete, steel )? Any type of metal will attinuate the signal.
    This includes wire mesh!

    If you have the options, try moving the remote(client) PC around
    and note the signal.

    Refresh me about the hardware you are using.

    William
     
  7. bluedog

    bluedog Network Guru Member

    First. Try upgrading to the latest official firmware.. 4.009 ? I think..

    If that doesn't give you the boost you need, then try using HyperWRT. It is very close to the official firmware, but it does add a feature that allows you to bump up the power to the attenaes(sp?)

    Good luck

    -BD
     
  8. ALT3R

    ALT3R Network Guru Member

    still fighting.......... :)

    Well, the floor is covered with wood, but under the wood is concrete and the concrete probably contains a wire mesh. The most unusual fact is that the other computer connected through wireless and being located at over 15m away has the same signal strength despite the fact that two of the five walls between the router and the PC are 0.5m thick and containing each a double wire mesh !!! That PC is in fact a Toshiba laptop belonging to my brother-in-law.
    Moving around the PC doesn’t change anything but the stability of the connection. Anyway, I only can move the PC about 1m around the point where I have the cables to connect it with the stereo and the TV.
    About the hardware:
    The router is a Linksys WRT54G v2.0 firmware 3.03.6
    The Wireless NIC is WMP54G recommended on the router webpage
    The PC is an old Intel 2.8GHz Northwood and the mobo is Asus P4V8X-X / 512 RAM
    I have to say that I choose this router because after reading some reviews on Tom’s Hardware and alike, was the only one to meet two out of three very important requirements from my point of view. 1- Stability, 2- it is working fine in high ambient temperature. I know that this router is not famous for its range, but I didn’t expect such a short range.

    Dan
     
  9. ALT3R

    ALT3R Network Guru Member

    hi bluedog,

    any directions where to find that HyperWRT?

    thanks for helping :)
     
  10. Guest

    Guest Guest

    Re: still fighting.......... :)

    I think you have found the problem. The wire mesh. The only
    solution would be to drill a hole thought the concrete or bounce
    the signal around the mesh.

    Good luck.
     
  11. ALT3R

    ALT3R Network Guru Member

    found HyperWRT

    found HyperWRT
    thanks
     
  12. jenx

    jenx Network Guru Member

    You might also find the fact you have one of the attennas with some sort of reflector attached is causing the problem. There's a reason why they stick 2 attennas on these routers.

    Why not buy another AP and use it as a repeater!
     
  13. ALT3R

    ALT3R Network Guru Member

    end of story !

    Conclusion: wireless LAN is still a dream unless all the PCs are in the same room and maybe turned with the rear toward the router, to satisfy the "line of sight" rule.

    Thanks everyone for reading and trying to help

    Dan
     
  14. czeman

    czeman Network Guru Member

    Re: end of story !

    To a point, yes. If your PC is at least on the same floor as the AP without too many walls in between, you'll be OK. My mom had her PC in an office above the laundry room, where her AP is, and it worked well. The difference between her situation and yours is, though, her office floor is plywood and carpeting.
     

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