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wrtg54 Wifi

Discussion in 'Cisco/Linksys Wireless Routers' started by Janto, May 8, 2006.

  1. Janto

    Janto Network Guru Member

    Hi , My wifi singal down stairs is very low...somethimes it is just a flashlight .. on and off......somethimes its a whole day stable...Now i want to buy a booster ??? but should it help

    ( My situation)

    MY Router and pc etc are in my bedroom...i have 1 pc downstairs that is connected to wifi .There are 2 floors from concrete here...

    I use a http://www.asus.com/products4.aspx?l1=12&l2=42&l3=0&model=1047&modelmenu=1

    Whats the best thing i can do ?
  2. slamcat

    slamcat Network Guru Member

    Before you plop the money down for a booster, you might want to see if it's something other. You say sometimes the signal level is good, sometimes it's not. That sounds inherent to 2.4 ghz interference somewhere. Could be a 2.4 wireless/cordless phone, microwave ovens cause interference as well.

    It would be better for you to track down the source of the interference or at lease rule it out.

    It could also be that you have a lot of metal in the framing of the house or structure you're in that's causing some problems from one floor to the next. If possible, you might look at trying to find a more central location for the router.
  3. Janto

    Janto Network Guru Member


    hi , i have very low singal down stairs ( 1 block) but the connection..somethimes its stable a whole day , and the other day its like a flashlight, I have v4.71.1, Hyperwrt 2.1b1 + Thibor15 on it..wpa etc is off...ssid to for safety but pc 2 can`t even find my wifi router...and Yesterday..was ssid on and it find my router.. so i connect it.......and waiting and waiting......it says.. Waiting for Network.....but its never connected` ???

    Edit i did unplugged everything....Phone etc but that isn`t the problem
  4. Janto

    Janto Network Guru Member


    Now i resetted the router and now it workz but still very low singal....isn`t there nothing i can do to solve it?
  5. Janto

    Janto Network Guru Member

  6. vincentfox

    vincentfox Network Guru Member

    1. Clear descriptions help, bonus points for spelling and punctuation.

    I am not a terribly particular person, but when you ask for FREE help it's more fruitful for you to put some effort into asking your question. A person doling out their knowledge without pay should not have to work too hard at understanding the situation, or they will pass it by. I am not jumping on you, just explaining the simple fact that people tend to answer the questions that are easiest to understand.

    2. It helps a lot if you understand WiFi and it's limits which clearly you don't. I recommend reading the FAQ and sticky posts at http://dslreports.com/forum/wlan, lots of basic info there.

    Quick summary:
    *WiFi is 2.4 GHz like many other home devices, make sure you have DISABLED all competing devices. This includes for example taking the batteries out of a cordless phone handset, not just unplugging the base from the wall. If you have neighbors nearby they may have cordless phones or WiFi that interfere. Changing channels to one of 1, 6, or 11 may help some.

    *Antenna used and it's position matter. Try simply angling it different ways. Try adding a home-made reflector like the simple 10 dBi corner template documented at http://www.freeantennas.com/

    *You cannot escape the fact that going through concrete is tougher than going through drywall. WiFi is usually referred to as a "3-drywall solution" meaning on average it will work okay through 3 layers of that. Anything more is beyond it's design.

    In difficult structures, many people use a WIRED backbone with ethernet or a powerline-bridge, to get network to a second area, and then setup an additional WiFi Access Point there. Repeaters are problematic, after all if it's having a tough time hearing signal how can it repeat very well? Picture yourself listening to a low-volume radio signal with lots of static and trying to repeat what you hear to your grandmother. If you are having a difficult time picking the signal out of the noise, you will do a lousy job of repeating it.

    Update: Disabling SSID does *nothing* for security, and complicates the problem of finding and attaching to an AP particularly with Windows clients. I recommend you have your unit broadcast the SSID, do not disable it.
  7. Janto

    Janto Network Guru Member


    thanks , Somebody said to me if i set the Transmit power to 251 mw the singal will be strong ??
  8. RonWessels

    RonWessels Network Guru Member

    Yes, the transmit power will be high. Your downstairs PC will hear the router much better. However, your downstairs PC will still only be transmitting with the same power level, so the router probably won't hear it. So you'll get a multi-bar connection that's terrible.

    It's like trying to talk to someone over a long distance where only one of you has a megaphone. It doesn't help the overall conversation.

    Getting a better antenna for your downstairs PC will improve the connection, because a better antenna will improve both its reception and its transmission.

    Oh, and if you set transmit power to 251 mW without external cooling (ie. adding a fan to your router), you'll probably fry your radio chip in the router after a period of time.
  9. Janto

    Janto Network Guru Member

  10. WirelessOverSand

    WirelessOverSand LI Guru Member

    Input here from a wifi newbie, but with a lot of radio background:

    I have used this sort of wireless PCI card in an office where there was only a wooden floor between the router and the PCs (not Linksys hardware - they had bought another brand but shouldn't make much difference)

    My experience was that with just the wooden floor and around 10 yards of air between the router and the PC, it made a big difference whether the PC was on top of the desk or under it!

    Yes, realigning the antennas sometimes helped a bit, but not much.

    First of all, the card in the picture appears to have a "pluggable" antenna - you might get better results by using a higher gain antenna if the plug is compatible (20 bucks or so, and the antenna alignment will be more critical, but will make more difference)

    Second point is that you don't want to have the repeater (WRE45G) at either end of the link - it will do most good if it is "half-way". If bandwidth across the network is an issue, I think the repeater will halve that - I think it "listens", then "sends" - if so, you will only get around 25Mb/s. However, if all you are doing is sharing a broadband connection, then this will be far more than needed (Broadband = 1Mb/s? 2 Mb/s?)

    BTW - there are a number of very bad reports around the net for the WRE54G. Some say they are hard to set up, some just return them as impossible. I bought one anyway and nearly fell into the trap of thinking that it wasn't working, and then realised that the main station (WRT54GS) has to be on the same SSID as the repeater, so when I thought I was seeing the main station only under WinDoze, I was actually seeing the repeater! Ran NetStumbler and then I could see both signals. Everything was okay!

    The repeater is sited about 2/3 of the way along my intended coverage area, with the main station located near the other end, and I get great coverage all the way - inside, as well as beside the pool! (6 single-storey houses with mud adobe brick or concrete-block walls, concrete and adobe roofs, main station located on the roof of house #2, repeater on the roof of house #4)
  11. Janto

    Janto Network Guru Member

    wl 138 pci card

    Hi , i talked to sombody on msn and he says its my pci card...because i buyed that card because the orginal cards where to expensive then..

    i have the Asus wl 138 first model i geuss...not v2 or ge

    Shall it be better if i buy the orginal cards? from linksys ?
  12. Janto

    Janto Network Guru Member

    nobody ?


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