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Old 04-21-2008, 06:38 PM
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Join Date: Apr 2008
Posts: 2
Default Newbie to try Wireless NLOS point to point in rural area

I have enough knowhow to setup my home network, but this is much larger.
I am FPS gaming at my rural home and dial-up is very very bad.
I am trying to achive 500kbps down and 250kbps up @ >100ms latency
One option I see is this.

Get cable internet subscription(or dsl) in nearby town
Setup a wireless NLOS bridge, (mabey a RadioLabs or Cisco Aironet solution)
to span 5 miles to my house where I have the receiver.

I dont know what works, hardware wise and if this is even feasible.
Any input is helpful or if I can find a more tech-savvy group, then a redirect?
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Old 04-22-2008, 03:07 AM
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Posts: 3
Default Re:

once upon a time, I was in an engineering class with a network administrator for a very small, local business. As an experiment, he built a biquad antenna to see how far he could shoot a wireless signal. Turns out, with the right math, the right patience, and the right "junk", a signal can be transmitted as far as 17 miles.

Why do you care? Well, if you built a very precise DOUBLE-biquad and mounted it to an old satellite dish you could find at a junkyard, you could do the same or even better. You could then grab a stray, unencrypted signal from someone in town, or a friend, or relative...maybe work up some kind of money-exchange to do it.

Google it...biquad antenna, wireless, parabolic dish antenna....see if it is something you are willing to try.
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Old 04-22-2008, 03:34 AM
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Posts: 506
Default

This is a doable project, but...

You ain't gonna do it alone.

The other people on this project are going to be the kind of people who give you a blank stare if you ask them if they caught "Friends" on TV last night. "Never heard of it. Is it new?"

Mathematics rears its ugly head...

ZYTRAX - Wireless Calculators

See:
Power Budget - total power of your system in dBm.
Free Space Loss - power loss over distance.
System Performance - How far will it go, will it get there or what is my Operating Margin?
Fresnel Zones - How much more than LOS or how high should my antenna be?

If you know any ham radio types, buy them a brew and have a sit-down.

'nother link:
Radio theory and link planning for Wireless LAN (WLAN)

Bring money.

Read the last post in this thread:
http://www.wirelessforums.org/wirele...ible-4824.html

Depending on what you do for a living, this is the kind of thing that looks good on a resume.
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Old 04-22-2008, 04:05 PM
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Join Date: Apr 2008
Posts: 2
Default

I might start by building an antannae.
I find a limit of .5-1 mile on ebay.
Wheras I can build one to reach 5, am I correct?

As long as I build a precice enough receiver Ill have a good as chance as any to recieve, and then I will look around before building a transmitter.

I might use some blueprints online for 1/4 or 5/8?

I should be able to plug this into my WRT54G.(with the right connector)
If I use a parabolic dish from the junkyard, does the piece in front not have to maintain constant distance? Some blueprints online just use a PCB sheet as a groundplane. Would I not need this if I used a full wave antenna?

Then I can worry about transmittion signal strength and if the signal will make it to me later.

Last edited by xxXen0xx; 04-22-2008 at 04:11 PM.
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Old 06-24-2008, 02:23 PM
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Join Date: Jun 2008
Location: Ireland
Posts: 6
Send a message via Skype™ to Wizzie
Default Non LOS?

Well I would go 900MHz for the backhaul (if you're in the States) in PxP mode using 10MHz bandwith. then upon to you to go down to a wireless router...
But way possible without to much troubles...
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Old 07-04-2008, 04:03 AM
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Join Date: Jul 2008
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Default

I am in the same position as xxxenoxx, i have a 5 mile gap with no line of sight. i plan on trying the Terabeam Terastar Dual-Channel T-POP as my midpoint (unsure of antenna choice at this time) and an EtherAnt 3 LR at the ends of the bridge. the EtherAnts are bidirectionally amplified by 1W, the T-POP is also bidirectionally amplified.

I am thinking about the NLOS antenna from RadioLabs:

WiFi Antenna - Non-Line-of-Sight 802.11 Antenna

Anybody have any experience or info on the T-POP?

thx in advance

spencerd76
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Old 11-01-2009, 04:49 PM
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Join Date: Nov 2009
Posts: 1
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I'm trying to get through 3.4 miles of pretty thick forest. This is the solution I found:
Non Line-of-sight bridge || Point to Point Bridge kit
Does anyone have any experience with these? I set up a map of google maps and RadioLab says that this set up will easily get me 1.5 mbs...
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