Go Back   Wireless and Wifi Forums > General > Members Lounge
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 06-03-2004, 12:39 PM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default dual antena units

is it possible to connect two parabolic antennas to a D-Link DI-614+ Wireless Router and use it as a bridge?
Reply With Quote
  #2 (permalink)  
Old 06-03-2004, 10:44 PM
Member
 
Join Date: Jan 1970
Location: Dunedin
Posts: 98
Send a message via MSN to scarfies
Default

a bridge to what? you would get away with a single antenna.
__________________
Kind Regards

Dan Clark
Network Manager
DunedinWireless
Scarfies.Net Ltd
Reply With Quote
  #3 (permalink)  
Old 06-03-2004, 11:52 PM
Senior Member
 
Join Date: Jan 1970
Location: Petone, Wellington
Posts: 266
Default Re: dual antena units

Quote:
is it possible to connect two parabolic antennas to a D-Link DI-614+ Wireless Router and use it as a bridge?
you can get splitters that will allow you to connect 2, 4 or more antennas but the implimentation of such a setup would be fairly specialised. If not it's just messy...

That and one would think that a splitter would effectively halve (or worse - losses through each connection introduced) your signal..
Reply With Quote
  #4 (permalink)  
Old 06-04-2004, 01:29 AM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default

Quote:
a bridge to what? you would get away with a single antenna.
Greetings, Thanks for the info.

But ya can't point a single antenna in two directions.

We would like to come from a broadband capable location on the outskirts of our local town, transmitt to the top of a hill, approx 5.5Km, then redirect the signal in a different direction, approx another 6 Km.
Our research and reading etc, would suggest we need to be running 24dbi parabolic antenna, but am reluctant to use an omni on hill top because of the lower gain.
We are definitely not land line Broadband capable...11Km from exchange with multiple switch cabinets in the line & heaps of poxy electric fences stuffing the regular dialup, have used dynalink and swansmart externals, they help, but still a slow service. So have opted for Wi-Fi
Are we some where on track, your comments / suggestions would be much appreciated
Regards, Robin
Reply With Quote
  #5 (permalink)  
Old 06-04-2004, 01:31 AM
Member
 
Join Date: Jan 1970
Location: Dunedin
Posts: 98
Send a message via MSN to scarfies
Default

oh i see, thats a repeater rather than a bridge then
__________________
Kind Regards

Dan Clark
Network Manager
DunedinWireless
Scarfies.Net Ltd
Reply With Quote
  #6 (permalink)  
Old 06-04-2004, 02:39 AM
Senior Member
 
Join Date: Jan 1970
Location: Petone, Wellington
Posts: 266
Default

Hey robin,
is this between chch and lyttleton by any chance?
Reply With Quote
  #7 (permalink)  
Old 06-07-2004, 08:08 AM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default

Hi Whetu, no its not Ch=Ch, but half an hour south of Dunedin
Cheers, Robin
Reply With Quote
  #8 (permalink)  
Old 06-07-2004, 09:10 AM
Senior Member
 
Join Date: Jan 1970
Location: Petone, Wellington
Posts: 266
Default

Quote:
but am reluctant to use an omni on hill top because of the lower gain.
Never know.. a 10dBi omni up there would do.. aim some 24dBi directionals back at it and you'll be away... the only disadvantage really is that it will cover a larger area, so anyone could tap into it unless of course you lock it down. You could then look at selling access but be aware of the legalities of your town end connection - you may not be legally allowed to onsell from a residential connection...

Stick with your original point to point if you just want it to be that.. point to point. But if you have other people interested, get a point to point backbone going and an omni node on the hill

Reason I asked about chch is because I'm giving advice to another group doing pretty much the same thing.
Reply With Quote
  #9 (permalink)  
Old 06-07-2004, 02:38 PM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default 15dbi 3degrees downtilt

Hi Whetu, thanks for that advice, great help in working our way through all the scenarios.
Does any one have a 10 or 15dbi omni with 3 degrees down tilt that they are finished with and would like to sell?
Cheers,
Robin
Reply With Quote
  #10 (permalink)  
Old 06-07-2004, 05:02 PM
Senior Member
 
Join Date: Jan 1970
Location: Petone, Wellington
Posts: 266
Default

shop.borg.co.nz has 180degree waveguides which come in at about 18dBi, and 360degree waveguides which come in at an estimated 12-14dBi

http://shop.borg.co.nz/product_info.php?cP...&products_id=87
http://shop.borg.co.nz/product_info.php?cP...&products_id=28

You can get angle adaptors for these to adjust their tilt.

The alternative is a single 10dBi colinear which go for about 4 hundy.

Depends what polarisation you want for your clients.. most people go for horizontal so it might pay to consider vertical? Up to you...
Reply With Quote
  #11 (permalink)  
Old 06-08-2004, 04:26 AM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default More Questions

Hi Whetu, thanks for that advice, great help in working our way through all the scenarios.

The 180 deg, 18dbi Waveguide looks like the go. Then point some 24bdi Parabolic antennas at it. Do you think we will be able to cover a distance of 6km with this steup? or more? We had decided we couldn't use an Omni or Waveguide because they don't come with high enough gain. So we will have to change our plan again, as long as you think it will work.

Cheers,
Robin
Reply With Quote
  #12 (permalink)  
Old 06-08-2004, 09:01 AM
Senior Member
 
Join Date: Jan 1970
Location: Meadowbank, Auckland
Posts: 112
Default

Hi Robin,
I have a Borg 180 deg waveguide.
I had a Dlink 900+ AP connected to it and I could easily get 6kms
using an Orinoco Gold card and a 15db grid antenna in my Laptop.

I tested from my place to One Tree Hill and Mt Victoria in Devonport,
both just over 6kms away and has no problems at all.

Now using a Linksys WRT54G Wireless Router but need to change
my antenna pigtail connector to a RP-TNC.

You will have no problem with 24db grids with the waveguide.
Just remember the polarisation of the waveguide. (Horizonal)

Cheers,
__________________
Steve M
Bigted
Cute, Furry and Cuddly
Reply With Quote
  #13 (permalink)  
Old 06-08-2004, 12:23 PM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default

Hi Steve, Thanks for the info.
Curious to know. the location we have in mind would have the first link comming in at about 70 degrees from the centreline of the wave guide and leaving about the same angle to the second link, both about the 5-6Km LOS.
Do you think that the wave guide would have the envelope coverage and range at these angles?
Hope this makes sense, if not I'll try and explain it again

Cheers, Robin
Reply With Quote
  #14 (permalink)  
Old 06-08-2004, 12:46 PM
Senior Member
 
Join Date: Jan 1970
Location: Meadowbank, Auckland
Posts: 112
Default

No Problem at all with that suituation - I believe.

For me, One tree hill and Mt Vic are about 105 deg apart
with One Tree hill being 65 deg off axis and Mt Vic 30 Deg
off axis in the other direction.

This is my real world experience, but please check with ShadowX
for further clafication.
__________________
Steve M
Bigted
Cute, Furry and Cuddly
Reply With Quote
  #15 (permalink)  
Old 09-10-2004, 04:35 AM
Member
 
Join Date: Jan 1970
Location: South Otago
Posts: 38
Send a message via MSN to kiwi_rock
Default

Dick Smith (re-branded) do those 500mW amp's now, couple that with an antenna to give around 9dBi with the cheapest wi-fi card that outputs 30-40mW, ad the booster (400-500mW x2x2x2 whcih is 9dBi) would give you the maximum allowable radiation by law and by far the best link speed (4000mW E.I.R.P). That'll get you up to 60-80KM's at the extreme LOS if you use it on both ends.
Reply With Quote
  #16 (permalink)  
Old 10-04-2004, 02:13 PM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default

I have asked a few questions at DSE about these boosters, and they could tell me that they are bi-directional but only half duplex! Will this create a bottle neck or will it be fine??
If any one could help, it would be much appreciated
Robin
Reply With Quote
  #17 (permalink)  
Old 10-04-2004, 03:42 PM
Senior Member
 
Join Date: Jan 1970
Location: Petone, Wellington
Posts: 266
Default

wifi is half duplex, no biggy
Reply With Quote
  #18 (permalink)  
Old 10-04-2004, 04:09 PM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default

Oh, ok. didn't know that! so what would happen if it put one of these boosters on to my waveguide? would this give me a fair sorta range? Is there any down side to them?
Thanx for the reply at this time of the night. I mean Morning!!
Reply With Quote
  #19 (permalink)  
Old 10-04-2004, 08:36 PM
Member
 
Join Date: Jan 1970
Location: Dunedin
Posts: 98
Send a message via MSN to scarfies
Default

Quote:
I have asked a few questions at DSE about these boosters, and they could tell me that they are bi-directional but only half duplex! Will this create a bottle neck or will it be fine??
If any one could help, it would be much appreciated
Robin
HAH the likelyhood of the Dick Smith guys down here actually knowing about the product they are selling is pretty amazing.
Wont be a bottlekneck, all wireless units are half duplex really.
__________________
Kind Regards

Dan Clark
Network Manager
DunedinWireless
Scarfies.Net Ltd
Reply With Quote
  #20 (permalink)  
Old 10-04-2004, 09:32 PM
Senior Member
 
Join Date: Jan 1970
Posts: 125
Default

Quote:
Oh, ok. didn't know that! so what would happen if it put one of these boosters on to my waveguide? would this give me a fair sorta range? Is there any down side to them?
Thanx for the reply at this time of the night. I mean Morning!!
The siganl would travel very far indeed but you'd be well over the allowable limits.
Reply With Quote
  #21 (permalink)  
Old 10-04-2004, 11:02 PM
Member
 
Join Date: Jan 1970
Location: South Otago
Posts: 38
Send a message via MSN to kiwi_rock
Default

You can use a booster and gained antenna so long as it doesn't go over 4000mW E.I.R.P, or depending on cable length even a signal higher than that may still end up less after cable loss etc...

They require a long-preamble for the swtiching on the booster from TX to RX, so if you move lots of little traffic & use a short preamble at present, you may notice some performance loss and/or packet loss.

Cheers,
Gavin.
Reply With Quote
  #22 (permalink)  
Old 10-05-2004, 10:12 AM
Member
 
Join Date: Jan 1970
Location: Papatoetoe, Auckland
Posts: 70
Default

You don't need a booster at the distances you are talking about.

My setup Wrt54g + Borg8+8 waveguide 12 m AGL (but still well below tree tops)
gets 6km with a 15dbi yagi poking out the car window.
6km is no problem.
Reply With Quote
  #23 (permalink)  
Old 10-05-2004, 11:42 AM
Member
 
Join Date: Jan 1970
Location: lake Waihola
Posts: 55
Default Confused!!

Ok, so i don't need a booster. im not sure what i need to do to inprove my signal. All i know is its not working as well as it should! i must have somthing setup wrong of something! What sorta signal strenth you getting off your Yagi? if you look at my other post, all the info on my setup you will see something is not working as good as it should. My next move is to add a 25W windmill and see if some more power at the hill top will help.
Reply With Quote
  #24 (permalink)  
Old 10-06-2004, 10:51 AM
Senior Member
 
Join Date: Jan 1970
Location: Petone, Wellington
Posts: 266
Default

using dlink gear is probably your first problem.. you should perhaps be looking at linksys or senao gear, that's what I'd suggest...
Reply With Quote
Sponsored Links
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dual Core faster than single care?? Walter R. alt.comp.hardware 9 02-11-2007 11:03 PM
change my 6230 for a PDA, think fo my Dual SIM laohu75@gmail.com alt.cellular.nokia 0 01-24-2007 02:50 PM
Coolermaster Stacker 830 chassis & dual Xeon mobos qu0ll alt.comp.hardware 2 09-27-2006 07:53 PM
64bit dual processor - dual core. Or just 32ai single chip Nik Simms (Web Developer) alt.comp.hardware 1 10-25-2005 04:49 PM
Dual DVD copy Platinum yarik alt.comp.hardware 2 10-19-2005 03:35 PM


All times are GMT. The time now is 09:36 PM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.2.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45