External Antenna

D

Darksun

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Where is a good place to get an Omni Antenna Besides from Iburst themselves ?
 
DO NOT Buy AN OMNI - for iBurst, purchase a directional antenna - no matter what the iBurst Blab says the technology favours directional antennas - for local antennas Poynting is best.
 
What speeds are you getting? I use an omni and get +- 600kb thruput in douglasdale from the randburg tower?
 
Think u can buy them at cellucity Stores. Not sure on the pricing tho
 
Darksun said:
Where is a good place to get an Omni Antenna Besides from Iburst themselves?
Click to expand...

Check in JunkMail, etc.
As an afterthought: I happen to have two iBurst i-Panels @ R400, but it's a directional antenna.

who.is.michael said:
DO NOT Buy AN OMNI - for iBurst, purchase a directional antenna - no matter what the iBurst Blab says the technology favours directional antennas...
Click to expand...

Yeah, omni antennas are almost always weaker no matter what technology you use.
But there is a place in the market for them and they do have some advantages: One example is that they're almost ID10T-proof! :cool:

who.is.michael said:
...for local antennas Poynting is best.
Click to expand...

FYI Michael: Years ago I got my hands on a locally manufactured antenna for a frequency range that includes iBurst's range - this antenna is in most cases twice (and in some cases thrice) as strong as the antennas made by Poynting and others!

They export these from SA into Africa by the thousands, because in a lot of the importing countries the base station density in coverage areas is far less than in SA, so it has turned out to be the perfect product.

These antennas are still being manufactured today.

Their rating?

A very useful 17dBi!
 
Hi "D" - thanks for the info however without the specifics; your post doesn't make much sense - I use three antennas that are very effective:

RAY1800/17 - http://www.radiant-antennas.com/commercial.php
YAGI-A0017 - http://www.poyntingdirect.co.za/ProductInfo.aspx?productid=YAGI-A0005 (1.8 GHz)
Stacking Yagi's - http://www.astronwireless.com/topic-archives-stacking-yagi-antennas.asp
K-GRID-003-05 - http://www.poynting.co.za/ProductDetails.aspx?pid=365 &DivisionId=2&DivisionName=Commercial (Feed Altered)
...and the last designed by a member of this forum GRIS, a flat panel that is extremely effective.

Two other international providers of antennas that is worthwhile:
http://www.stelladoradus.com/1.7-1.9.parabolic.antennas.php
http://www.xaassociates.com/asp/tdj-pst1800-28-18.asp#

Other local suppliers:
http://www.rfdesign.co.za/pages/5645456/Contact.asp
http://www.miro.co.za/
http://www.rssouthafrica.com/
 
Could someone in 1 short sentence explain dBi to me pls?

Is a lower dBi stronger/better than a higher one, or vice versa?
 
Higher dBi = give a stronger signal output. <--- The short Sentence you want



The long one below (explaining cable lengths and how it affects the antenna)
You always use a short cable connected to these outside antenna's. Thats why they usually build the Router/Switch inside a plastic box to withstand wind/rain. (Little router connects to antenna with a short cable). Because you lose 0.5 dBi per meter of cable length.

So a 10dBi antenna Omni direction (360degree antenna) with a 5meter cable will be a true 7.5dBi Omni. Obviously, the longer the cable the crappier your Antenna will perform. (Basically the signal degrades from antenna pickup to your Router)


Same counts with Directional Antenna's.


Hope the above helps you. (Tried to explain it as easy as i could, without getting too technical . Going into wavelengths etc.)
 
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