Omni Directional Antenna

I am trying to figure out what is the best type of omni directional antenna for outdoor wi-fi use.

I am gonna be making a hot spot and want to know the best type of omni that will give me the best range and throughput.

I will be using a either a wireless-b or g router for the access point. I know g gives the best possible speed but does the range compare to wireless b at the longer ranges?

Please give as much knowledge as possible.

Thanks

You are way ahead of yourself. The first thing you need to do is a site survey. You need to figure out how much coverage do you want or need (WLAN cell radius). Will the cell cover users just outside or inside as well ? You need to identify holes of coverage due to mulipath, interference and any neighboring WLAN's.

Also as the operating frequency of the increases from 2.4 GHz to 5GHz there is additional path loss. This results in a smaller cell radius. While it is good that you have thought about antenna diversity there are a lot of other factors that you need to consider for optimal performance of your WLAN.

2006-12-18 07:29:57 by Jimmy P.

In this episode of Wi-Fi Busters, we bust the myth that omni-directional antennas are as effective as directional antennas. Starring Violet Smith ...

how to turn a Omni directional antenna into a Directional one?
i have a Hawking HWUG1 Wireless G USB Network Adapter with External SMA Jack and i am buying a [HAO9SIP] Outdoor Hi-Gain 9dBi Omni-Directional Wireless Antenna Kit to exstend the Range of it i wanted to know how can i turn a Omni Directional Wireless Kit in to a Directional one ? i have some ideas but some tutorials will help

If yo uare talking DIY i've heard of people using pringle tubes to direct signal, never seen or tried it though.

2008-09-24 01:26:32 by Thinker

Price: $119.99

Pipe and foot mount enables antenna to be installed inconspicuously on a roof or wall or on a balcony and even in an attic
Extremely low noise amplifier provides outstanding digital TV reception without saturating the signal
Patented reception technology outperforms traditional antennas
Optimized for HDTV reception and high gain picks up further stations
360 degree reception pattern eliminates need for constant adjustments

Looking to put an antenna in a fixed location in my attic to run multiple tvs.

Would like to pull in as many nearby channels as I can without needing to constantly adjust the antenna.

Will use digital converters on the tvs to pull in the digital signals.

Every location is different in terms of the antenna type you need. Your best bet is to go to http://www.antennaweb.org

Put your address and style of home into this web site & they will tell you exactly the type of antenna and the direction the antenna should be pointed to receive digital broadcasts in your area.

2008-04-07 16:54:03 by joeflaherty

Price: $753.99

Very flexible aiming characteristics
Range of up to 70 miles or more
Weatherproof construction
Works up to 70 miles or more from transmitters
Impedance of 300/75 ohm

I am trying to connect our small office to our staff and guest housing buildings, which are maximum of 150m away (not all in one direction, hence the omni-directional antenna). There are some trees in line-of-sight between two of the buildings.

Do you think I might need to pair the antenna with the HSB2 booster? If so, what is the likely total distance I could get using both?

if u want to believe the specs on their website, the Ha09SIP complete kit has a range of 2.5 miles (that's 4020 metres!!!) http://www.provantage.com/scripts/search .dll/compare/HAUW01V
that i think is a bit optimistic. Still should be more than enough for your needs, unless of course the buildings have thick walls or lots of internal walls.

The HSB2 (again according to their website http://www.hawkingtech.com/products/prod uctlist.php?CatID=32&FamID=72&Pr odID=187
should boost the signal a whopping 600% (sixhundreds!!)

combined , that makes 15 Miles ,(24 Kilometres), that I find a bit hard to believe for something under 200 dollars.

good luck with your project

.............

2007-01-17 19:15:05 by howedoogie

I am thinking of setting up a paid wifi hotspot business in a small town. I need a wifi antenna that can cover an area of about 20km in radius. Can anyone out there with IT knowledge tell me the type and brand of omni directional wifi antenna to use? I intend to use only a single antenna to serve the radius. If you have links to website of the product, kind give it to me.

Well you probably WONT find an Omni with that type of gain. The ability to add gain requires reflectors and that just isn't possible with omni directional antennas.
There are several 11-15db omni for outdoor use. With 30db antenna you could well exceed the legal limits for output! You also need to decide horizontal or vertical radiation pattern. Which depends on what is around you to interfere with your system.
One good source is
http://www.hyperlinktech.com/web/hg2415u _pro.php that is a 15db vertical.
Another is
http://www.radiolabs.com/
You can use a good amplifier with your antenna to get better coverage for your system (just dont exceed your local output limits!!!). Height of the antenna does matter the clear path is what you are after. If your terrain is flat roof mounting will give you good coverage. You also don't want to get it too high or those nearby will be skipped as the signal will be too far over them to pickup well.
Here is a good article to start with.
http://www.seattlewireless.net/AntennaHo wTo

We have one central antenna at 90 feet with three sector antennas which cover 120 each so three radios are used to cover the entire 360 radius. These are available up to 20db but 13-15db works well with good radios.
See http://www.hyperlinktech.com/web/antenna _array.php

2007-08-03 05:18:23 by MBA