Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

30 posts


Topic # 59086 26-Mar-2010 10:42
Send private message

I'm interested in setting up a point to point wifi link over a distance of 2km.

The only obstacle blocking LOS is a row of large Totara trees ~50m from one of the two sites.

Does anyone here have experience with long range wifi links? I'm concerned that the Totara trees may rule out making this connection and would value feedback from anyone with experience doing this.

Note that the link is for providing a basic internet service only so a sub 1Mbit connection would be acceptable (obviously the faster the better though)


Create new topic
8026 posts

Uber Geek
+1 received by user: 387


  Reply # 311597 26-Mar-2010 12:01
Send private message

What are the gaps between the trees like? 

This explanation might help:

To have a viable RF link 60% of the Fresnel Zone must be free of obstructions. The Fresnel Zone is at its widest in the middle of the link. There are formulae that can work out what clearance you need at certain points along the link but most of the time it is best just to make sure there is plenty of gap, and do a wireless site survey first.


3215 posts

Uber Geek
+1 received by user: 620


  Reply # 311696 26-Mar-2010 17:12
Send private message

In my expierence, you can pretty much rule out anything with trees in the way. Unless there is a gap you can aim through, or they are very thin where you can see the colour of the sky through the tree then its a no-go.

Ray Taylor
Taylor Broadband (rural hawkes bay)

There is no place like localhost
For my general guide to extending your wireless network Click Here

37 posts


  Reply # 313138 30-Mar-2010 21:32
Send private message

What speeds are you needing?
If you go with lower frequency ie 900mhz gear this i have found in the past more suitable for obstructions and good for distance, but it is limited in speed, ie 2mpbs but can have very low latency which is a benefit also.

3215 posts

Uber Geek
+1 received by user: 620


  Reply # 313296 31-Mar-2010 03:18
Send private message

Hey dynamic - sorry to go a little off topic,
Can you suggest some 900mhz radios that you have used.
I have looked but cant really find much because half the FCC's unlicenced 900mhz band is used by our cellphone networks and all locked up.

I would be interested in playing around with some to see how they go through trees myself.

Ray Taylor
Taylor Broadband (rural hawkes bay)

There is no place like localhost
For my general guide to extending your wireless network Click Here

1984 posts

Uber Geek
+1 received by user: 133


  Reply # 314038 1-Apr-2010 21:59
Send private message

I think anything using OFDM has a better chance of getting a signal through or even bounced off nearby obstacles. Not sure if any wifi equipment would have those capabilities but might be carrier-grade stuff.

Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^

2437 posts

Uber Geek
+1 received by user: 144

  Reply # 314042 1-Apr-2010 22:03
Send private message

Can you not run POE up to the tree's and throw the AP on one of the tree's?

35 posts


  Reply # 321360 21-Apr-2010 16:02
Send private message

I would try using two Engenius 2610 units at each end, you might be surprissed with the result.

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

Intel introduces new NUC kits and NUC mini PCs
Posted 16-Aug-2018 11:03

The Warehouse leaps into the AI future with Google
Posted 15-Aug-2018 17:56

Targus set sights on enterprise and consumer growth in New Zealand
Posted 13-Aug-2018 13:47

Huawei to distribute nova 3i in New Zealand
Posted 9-Aug-2018 16:23

Home robot Vector to be available in New Zealand stores
Posted 9-Aug-2018 14:47

Panasonic announces new 2018 OLED TV line up
Posted 7-Aug-2018 16:38

Kordia completes first live 4K TV broadcast
Posted 1-Aug-2018 13:00

Schools get safer and smarter internet with Managed Network Upgrade
Posted 30-Jul-2018 20:01

DNC wants a safer .nz in the coming year
Posted 26-Jul-2018 16:08

Auldhouse becomes an AWS Authorised Training Delivery Partner in New Zealand
Posted 26-Jul-2018 15:55

Rakuten Kobo launches Kobo Clara HD entry level reader
Posted 26-Jul-2018 15:44

Kiwi team reaches semi-finals at the Microsoft Imagine Cup
Posted 26-Jul-2018 15:38

KidsCan App to Help Kiwi Children in Need
Posted 26-Jul-2018 15:32

FUJIFILM announces new high-performance lenses
Posted 24-Jul-2018 14:57

New FUJIFILM XF10 introduces square mode for Instagram sharing
Posted 24-Jul-2018 14:44

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.