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Discussion in 'Networking Issues' started by rddrgn, Jan 4, 2009.

  1. rddrgn

    rddrgn Addicted to LI Member

    hey all
    I've been lookin for max distance for a wrt54gs v4(dd-wrt micro flashed on it, xmit set to 200) w/factory antenna's?
    I'm tring to connect to a wmp54gs w/factory antenna about 150-200 ft away with one bush in line of sight and one single pane window in between. Problem is signal strength is none to low at random and speed is 1-54mbps at random

    router is outside and nic card is inside, and when i say straight line of sight, i can look over the top of the computer and see the router through the top of the bush and window!

    what's the best way to improve connection and speed with limited to no budget? what are the best tweeks for router and nic card?

  2. kspare

    kspare Computer Guy Staff Member Member

    best way to improve will be some yagi antenna's for the most part...thats it.
  3. rddrgn

    rddrgn Addicted to LI Member

    what is the stock distance of the router and nic before the switch to Linux on the router?:confused:
  4. HennieM

    HennieM Network Guru Member

    To Linux or not to Linux makes no difference - the radio's receive sensitivity etc. are the same. Anyway, the V4 had Linux on it before you loaded dd-wrt.

    You probably have too strong a signal from the router relative to that of the NIC. Wireless is a 2-way street: WRT must transmit to NIC (and NIC receives), and NIC must transmit to WRT (and WRT receives). Your connection speed is governed by the weakest link.

    The nett effect is probably that your WRT is putting out such as strong signal theat the NIC - assuming that the NIC has semi-intelligent firmware - does not feel the need to increase its own Tx strength.

    A cheap solution would be to put parabolic reflectors on the WRT (like these for instance http://www.freeantennas.com/projects/template/). This will help with both the Rx and Tx, but turn the WRT's Tx power down!

    Just for interest: branches/leaves are like big blobs of water, absorbing a lot of 2.4 GHz signal. Further (depending on exact distances), you would need to see the WRT from the NIC's antenna in a gap of about 1ft by 1ft if you want proper 2.4GHz "line of sight". Any gap smaller than that would partly block your signal. (This has to do with the wavelength of 2.4Ghz signals - they need a much bigger gap to get through than light needs, freznel zones, etc.).
  5. rddrgn

    rddrgn Addicted to LI Member

    ok, no questions answered. just more questions pop up.

    first: what is the max STOCK distance between the two devices that they can handle with out packet loss?

    second: if i use reflectors will i still be able to receive a signal behind the reflectors?

    third: distance between devices is 140 feet (finally got to mesure instead of pacing it out)

    fourth: what are the best settings for both devices

    fifth: part a) if the nic card has firmware then why do we use device drivers
    part b) how to update firmware on nic card if it has it

    sixth: if signal is to strong wouldnt i have 5 bars on the win xp meter instead of 2


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