WRT54G w/grid Antenna

Discussion in 'Cisco/Linksys Wireless Routers' started by to_abb, Jul 27, 2007.

  1. to_abb

    to_abb LI Guru Member

    Hi, I am trying to setup a WRT54G to work with a grid antenna. Had been told this setup would work to pickup a friends network on the otherside of our lake. Problem is I am not sure if I am doing it right and haven't met anyone else that has used one of these before. Not to mention best antenna setup [horizontal or vertical polarity and so forth]

    I have one of the dipole antennas removed and the antenna connected to the router that way. Problem I am running into is how do I aim the antenna and search for his signal?

    I have Passmark WirelessMon and Netstumbler as software programs to search for a signal. I've never really used Passmark before so no luck with that.

    Anyone else ever set up a system like this before or have some recommendations I'd appreciate it. Thanks
  2. Deimdos

    Deimdos Network Guru Member

    The only thing the antenna changes is the extended range, nothing else.

    Then, to connect with your friends you must set up your WRT54G as a AP (and your friends as your client) or client to some friend's router/AP

    PD: netstumbler doesn't work with WRT54G
  3. crawdaddy

    crawdaddy Network Guru Member

    To aim the grid antenna, roughly aim it in the direction of the AP, and monitor the gain on the router. keep adjusting the antenna until the gain is the best (nearest 0 dbm). When the gain is as high as it will go, rotate the antenna polarity from horizontal to vertical (or vertical to horizontal, just swap the polarity of the antenna). If the signal gets better, that you have the right polarity, if it gets worse, then it's the wrong polarity, and change it back. In the firmware set the antenna selection to the grid antenna port. Hope this helps....
  4. GeeTek

    GeeTek Guest

    I see only one minor problem with this picture. The WRT54G does not have client mode or client bridge mode, and will not "PICK UP" anything other than potential clients. He is trying to pick up service from the distant network. This will require a client bridge device or new firmware to convert his existing device. :bounce:
  5. crawdaddy

    crawdaddy Network Guru Member

    my error, I assumed he was going to be putting aftermarket firmware on his router...been so long, I almost forgot there is such a thing as "factory" firmware lol. I thought the factory firmware had at least client mode...
  6. t4thfavor

    t4thfavor Network Guru Member

    No client mode on OEM firmware, they still want to sell bridges. You will have to update the firmware, and then set the ap to client mode vis the web interface. Then use the command line to find the best signal (iwconfig or iwlist scanning). I used a Linux box with Kismet and a pcmcia card with antenna port to do the aiming, but not everybody has access to that.

    Keep in mind that if you use client mode instead of wds you can only have wired clients connected to the wrt54g.
  7. to_abb

    to_abb LI Guru Member

    Thanks guys. I have DD-WRT back on the WRT and have set it to client mode.

    Not clear on this though "Then use the command line to find the best signal (iwconfig or iwlist scanning)" Is that something entered in Linux? I'm stuck using my wife's laptop right now with XP on it. Waiting for my laptop which I will stick Debian on hopefully start my Linus education.
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