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Thread: Advice needed : Setting up wifi repeater 11km

  1. #1

    Default Advice needed : Setting up wifi repeater 11km

    My parents live on a farm about 11 km outside town (as the crow flies), in a valley where there's no line of sight to town. So they don't even have cell phone reception. About 2 km from their house (and about 12 km from town) there's a mountain from where you can see the town, and their house. I want to set up a wifi bridge on the mountain so they can get internet via an ADSL line in town. I'm guessing I need the following:

    - Wifi router & directional antenna in town
    - Router in bridge mode, with antenna that that sees both of end points (end points are separated by about 80 degrees). Solar panel & battery to give power to the bridge router
    - router and directional antenna at their house on the farm

    Any advice on how to do this the cheapest way?

  2. #2
    Grandmaster
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    :-)) I think we are going to see a lot more requests like this ^^^^

  3. #3

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    you gonna need some nice microtik router boards and cards for this. The solar pannel for charging the battery isn't cheap. I'd guess you will spend 15K on the whole setup!


    edit: idea - Why not try that sattelite internet that was posted a couple of days ago ???
    Last edited by SirFooK'nG; 02-07-2009 at 03:16 PM.
    BullShyte Baffles Brains...

  4. #4
    SmoothOokerMaximus The_Unbeliever's Avatar
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    Contact the guys at the WUG's

    Ryder_JHB and Protzkrog for starters.
    Is the 10 Commandments for Christians?

    Saturday is the Seventh day, Sunday is the first day.

  5. #5

    Default

    Jeez, R15k is a bit steep. I was hoping for around R5k. I'll contact those two, and ask the question on the ctwug forum as well, thanks.

  6. #6

    Default

    One of our guys has recently purchased a solar panel setup, and has successfully powered his Mikrotik RB433 from it, so I'm sure it can be done!

    I would be worried about the equipment being stolen though, especially being on top of a mountain/koppie... Any chance of being able to lay a slab, and bolt/chain some stuff down?

    I'll send the solar-panel chappie in here asap!
    Core Member, Johannesburg Area Wireless User Group.
    http://www.jawug.org.za/ - Because information should be free!
    http://www.wug.za.net - no wires, no limits

  7. #7

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    Quote Originally Posted by rbarryza View Post
    Jeez, R15k is a bit steep. I was hoping for around R5k. I'll contact those two, and ask the question on the ctwug forum as well, thanks.
    google prices for solar panels boet ... shocking. Then you need an inverter too handle the power off the panel, plus the battery. Then a solid base that is earthed properly, waterproofed ..... eish not so easy
    BullShyte Baffles Brains...

  8. #8

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    Excellent! Getting stolen is not a problem, it's too remote and mountainous for anyone to get there. The wild animals will scare them off (it's a game farm). Will probably have to put a fence around it to keep the baboons out though.

  9. #9

    Default

    Hi,

    Thanks for the invite Ryder. I've recently acquired a solar panel, regulator, and battery to power up a RB 433 as a test.

    Quick thing - you will need to calculate the uptime required and the wattage of the solar panel.

    Safe wattage to assume is 30W - so you would need 30W of the new solar panels. The problem is that the output voltage from the solar panel is variable and you need a regulator of sorts. I got one from the solar guy. Can handle 6A - about R 350.

    So, now you've got solar <> regulator. This regulator is quite clever and has a charge output and a load output. The load output also cuts off below 11.8V. (Very necessary)
    The only other thing you'll have to think about is the size of the battery - you would need a 15Ah at least. I tried a 7Ah and it didn't last the whole night.

    I simply plugged into the POE and power the RB as per normal. Shout if you need more info.

    PS. Pricing on solar panels is approximately R 55/W
    Last edited by Atti2de; 02-07-2009 at 10:06 PM.
    Core member - JAWUG
    www.jawug.org.za

  10. #10
    Grandmaster
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    Quote Originally Posted by Ryder_JHB View Post
    Any chance of being able to lay a slab, and bolt/chain some stuff down?
    He'll have to, otherwise his setup won't last long.
    Veritas vos liberabit

  11. #11

    Default

    Quote Originally Posted by rbarryza View Post
    Excellent! Getting stolen is not a problem, it's too remote and mountainous for anyone to get there. The wild animals will scare them off (it's a game farm). Will probably have to put a fence around it to keep the baboons out though.
    A "Pet" electric fence will do.

    http://docs.nemtek.com/nemdocs/Elect...n%20manual.pdf

    About R525.00 for a complete set with low output energiser, wire, fibreglass rods, springs, etc to cover about 50 meters depending on setup.

    Also look here.

    http://www.mepsef.com/pet_stop.htm
    Last edited by I am Penguin; 03-07-2009 at 08:34 AM.

  12. #12

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    Quote Originally Posted by Ryder_JHB View Post
    ........!.............
    Care to comment here? http://mybroadband.co.za/vb/showthread.php?t=17690

  13. #13

    Default

    Quote Originally Posted by rbarryza View Post
    My parents live on a farm about 11 km outside town (as the crow flies), in a valley where there's no line of sight to town. So they don't even have cell phone reception. About 2 km from their house (and about 12 km from town) there's a mountain from where you can see the town, and their house. I want to set up a wifi bridge on the mountain so they can get internet via an ADSL line in town. I'm guessing I need the following:

    - Wifi router & directional antenna in town
    - Router in bridge mode, with antenna that that sees both of end points (end points are separated by about 80 degrees). Solar panel & battery to give power to the bridge router
    - router and directional antenna at their house on the farm

    Any advice on how to do this the cheapest way?
    The Jwug guys here knows all about it. mabe looking here for ready kits may help. Discuss your need with them too.

    http://www.dbg.co.za/catalog/index.php?cPath=74_40

    http://www.scoopdistribution.co.za/p...roducts_id=783

    http://mailer.miro.co.za/miro_add_4_wireless_kit.jpg

  14. #14

    Default

    Great, thank you very much. Now I'm making progress! More questions then.

    Wifi:

    I gather something like this is needed for the end points:
    http://www.scoopdistribution.co.za/p...roducts_id=783

    - Do I have to add another R52 for the repeater point? (ie 433 Routerboard + 2 x R52 radios)?

    - What if I want to add 1 or 2 more clients in the valley? Will I have to add more R52s to the router? If I can get 1 or 2 more farmers to help pay, the costs might just be reasonable.

    Solar :
    So with About R1800 worth of panels, a R500 battery and a R350 regulator (let's say around R2700) I've got power at the router point? The alternative is a cell repeater which MTN wants R200 000 to install.

    VoIP :
    So let's say I get everything working. Now I want them to be able to make and receive calls. Do I just get a 021 DID number from http://www.connection-telecom.com/ (R90 a month), connect a VoIP phone to their router and away they go?

  15. #15

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