WiFi bridge over 150m or so - possible?

Discussion in 'Networking, Telephony & Internet' started by Smokin Whale, Jan 13, 2011.

  1. Smokin Whale

    Smokin Whale Member

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    Hey guys,

    I'm looking at setting up a Wifi bridge for a friend who currently has two separate buildings 150m away from eachother, both with active phone connections. She wants to have internet access at both buildings if possible via WiFi.

    [​IMG]

    This is the current satelite photo of her land. The building on the right is the house, while the other one on the left is the office. There is a bit of shrubbary and a small creek in between. As far as I'm aware, there is no power to that small building in between.

    Is it possible to share an internet link in between these two buildings? What sort of equipment should I be after? Perhaps it would be better to go for some form of wired connection instead? Ideally I would like to do this as cheaply as possible. Will a couple of good DD-WRT routers sitting by windows with a powered directional antenna be enough to do the job?

    Any suggestions would be greatly appreciated!
     
    Last edited: Jan 13, 2011
  2. cbb1935

    cbb1935 Guest

    Budget?

    You can do it cheapest, cheap, or bloody expensive. Depends on the budget.

    If there was power to the shed and its on same grid even ethernet over power might work!

    Wireless directional Cantenna (google that) would work with line of sight. Without line of sight, you could go omnidirectional external antenna, or a name brand (Cisco/Netgear) directional outdoor antenna.

    The Netgear 9Dbi external antennas are supposidely good for a few kms line of sight.
     
  3. OP
    OP
    Smokin Whale

    Smokin Whale Member

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    Budget... would be cheapest. Less than $400 preferable. The house on the right already has a Netgear ADSL WiFi G modem. Line of sight is a bit of a problem, there are trees blocking the line of sight, so omnidirection might be the go.
     
    Last edited: Jan 13, 2011
  4. 1shot1kill

    1shot1kill Member

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    Omni-directional will be worse than directional with those trees in the way. You need directional antennas for this (Read this for why).
     
    Last edited: Jan 13, 2011
  5. OP
    OP
    Smokin Whale

    Smokin Whale Member

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    Ahh, very interesting, thanks for that link! I'll certainly do some googling on these cantennas, see what I can achieve.
     
  6. round

    round (Banned or Deleted)

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    is that pool 10m wide?.....

    assuming the pool is 4m wide, its no further then 80m.

    wired could also be an option, there might already be conduit between the house and shed,

    seeing they both have phone connections, follow the phone line if the powerline network is a no go.
     
  7. benjagan91

    benjagan91 Member

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    Please keep us posted. Gigabit wired through the creek etc would be impressive as fuck haha. Actually even the wifi would impress me. This is some awesome shit :thumbup:
     
  8. OP
    OP
    Smokin Whale

    Smokin Whale Member

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    I was thinking about that... but really she doesn't need gigabit :tongue:. If it were, a simple solution would be to probably run 60m or so of cat7 to the the little building in between, run power in there somehow, then route it through a powered gigabit router to the office.

    Seriously though, with the cash to burn, a fibre solution would work great. I used to work at a high school, and we used to have a farm which had computers in it - we ran fibre over 300m or so to connect it to the main switch, full gigabit speeds and all (in fact I think it was even 10GE ready).

    I will look to go with a wireless solution as speed is not a necessity (still on ADSL1) and it will most likely work out to be cheaper and simpler (i'd need to get data cablers in to do the job legitimately).

    Also, 150m is a conservative guess based on the measurements provided on google maps - I know it's about 80-90m from the very end points of the buildings in a straight line, but routers will be in the most eastern parts of the office on the left.
     
    Last edited: Jan 15, 2011
  9. beaco

    beaco Member

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    wifi will cover the distance without an issue but I don't think it will work very well without line of sight just put the access point in a waterproof box mount it on a pole and put an antenna at the top of the pole. Keep antenna cable distances short. You should be able to do kilometres without a problem.
     
  10. Jesta

    Jesta Member

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    Try this for distance calculation http://www.daftlogic.com/projects-google-maps-distance-calculator.htm
     
  11. OP
    OP
    Smokin Whale

    Smokin Whale Member

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  12. m0n4g3

    m0n4g3 Member

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    How tall are the trees? You may just need to get a rather large antenna or something on each building, or cut/trim trees to get some LOS.

    Ubiquiti networks do some pretty cheap point to point wireless stuff that does 120mbs over 3/4kms distance (tried and tested here at work :) ).
     
  13. OP
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    Smokin Whale

    Smokin Whale Member

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    Trees are fairly tall... I think it's safe to say that I don't think she's going to want to chop much of it.
     
  14. C4Z4M

    C4Z4M Member

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    Check out the ubiquiti products their gear should work for your budget
     
  15. OP
    OP
    Smokin Whale

    Smokin Whale Member

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  16. Pugs

    Pugs Member

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    look at freenet for these
     
  17. cbb1935

    cbb1935 Guest

    They don't work that way. Pretty much all consumer grade gear use omnidirectional antennas.

    The TP Link you are looking at is no exception:
    http://www.tp-link.com/products/productDetails.asp?class=&content=spe&pmodel=TL-WR1043ND

    As per specs they are reverse SMA removable antennas.
    "3 detachable antennas (reverse SMA connector)"

    Problem is your outdoor directional antennas (any make/model/dbi) wont be cheap.

    http://www.mwave.com.au/sku-46070025-NETGEAR_ANT24D18_18_DBi_Panel_Directional_Antenna_(ANT24D18)

    They come with a reverse SMA > N Female convertor.

    The two TP Link models (TL-ANT2414B and TL-ANT2414A), one is reverse sma, but I don't know if it's suitable for outdoor conditions. The outdoor antenna is N Female connection and I don't believe they come with a convertor.
     
  18. OP
    OP
    Smokin Whale

    Smokin Whale Member

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    I see. What about TP-Link's own directional outdoor antenna? No good? Remember, I don't need much speed, just a solid connection. Even if it crawls at 5mbps or so, thats fine. It uses an N-Type connector, but it shouldn't be too hard to find a good SMA adapter.

    http://www.umart.com.au/pro/products_listnew.phtml?id=10&id2=122&bid=6&sid=71103

    Only $36 - would be really nice to be able to do this whole thing at around the $200 mark.
     
  19. chunksoul

    chunksoul Member

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    i have some directional antennas you can buy from me 2nd hand

    old hills ones.

    g compatible

    but if you can't see the other building from the roof of the house don't bother.
     
  20. Dopefish

    Dopefish Member

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    Personally I think those trees are going to cause it to be a bit dodgy with wireless. You could do 20x that length if you had clear LOS, but the trees are going to mess with your signal.
     

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