Can I use a directional antenna / WRT54G / Factory firmware?

Discussion in 'Cisco/Linksys Wireless Routers' started by NightOwl326, Jan 13, 2006.

  1. NightOwl326

    NightOwl326 Network Guru Member

    Please all pipe in on this. I need to know for sure if it is ok to use a cantenna and one omni on a WRT54G. Reading all over the net is giving yes and no. You guys are the gurus, so please pipe in with opinions and real world experiences.

    The more the opinions the better......Scott
  2. Couledouce

    Couledouce Network Guru Member

    No real world experience, but as I understand the WRT54G uses an algorithm to work out which is the best signal form each of the antennas. So in order not to confuse this algorithm you need to be able to disable the other antenna (and not just by riping it off!).

    So can you do this with the factory firmware, I don't have it anymore?
  3. vincentfox

    vincentfox Network Guru Member

    Depends on what you mean by use it.

    Yes, it will almost always pick the directional if it's giving stronger signal and you dont' confuse matters by having local clients. Example would be point-to-point bridge units locked to a different SSID and encryption only talking to each other.

    You can reduce this to zero problems though by using alternate firmware and locking TX and RX to that antenna only.
  4. NightOwl326

    NightOwl326 Network Guru Member

    What happens if you remove one antenna so that it can only listen to one?
  5. NightOwl326

    NightOwl326 Network Guru Member

    Keep in mind I am a WIFI novice!
    Would 1 omni & 1 directional work in this application?

    One access point / only one laptop ever connecting to access point /
    directional pointed to cover outside area of house / omni used inside house
    / then diversity should only be picking the best signal from the laptop based on the signal from one or the other antennas based on the orientation of the laptop?

  6. vincentfox

    vincentfox Network Guru Member

    It depends on how you define "work".

    If *you* are the only user, and the AP never has to divide up it's attention, this can work fine. You are in the yard, it sees you on the directional and focuses it's attention-span there. You are in the house, maybe it sees you better on the omni and uses that. Okay I think.

    Where many people go wrong is getting the idea to use it to hook up their neighbor at the same time as doing household work themselves.

    Here's an old thread where I used a lot of words trying to explain how misunderstanding how diversity works can lead you into trouble:
  7. Couledouce

    Couledouce Network Guru Member

    Note: Pulling one antenna off, does not change anything in the equation, the circuit will still recieve a signal. You can test this by detaching both antenna, the WRT wireless will still work with a reduce range :)
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