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Re: FN-FORUM: Network over ringmain
date posted 1st May 2006 00:02
ok.
here are some of the options you have then.. I've implemented all of them
except the recently introduced "wireless N" technology.
- a yagi antenna which sort of focuses its signals into a very narrow path
(and you'd need another yagi antenna on the receiving end.) but there
shouldn't be any obstacles in between to obstruct the signal path. I have
connected buildings 50 km. apart with this method (using very expensive
industrial grade antennas that were 1.5 metres in length..) The only
requirement is to make sure the antennas "see" each other. Here2s a link to
a cheap one that'd do the job for you. In this scenario you basically get 2
access points and connect these antennas to the access points with the
enclosed cables and position them somewhere high on top of the building
where the antennas would see each other.
http://cgi.ebay.co.uk/YAGI-18dbi-Antenna-15m-cable_W0QQitemZ9718013581QQcategoryZ61816QQrdZ1QQcmdZViewItem
- 2 WDS enabled routers / access points which would act as a wireless
"repeater".. Linksys makes good models. Here's a review of one:
http://www.tomsnetworking.com/2004/09/02/linksys_wre54g_wireless_wre54g/
WDS is the name of the technology that allows access points / routers to act
as repeaters to increase the range of the wireless signal. I have once daisy
chained 4 of them in a house so it got the network connection from point A ,
repeated over points B , C and D and the client laptop was connected to
point D and it still works fine (as long as you don't change the locations
of the repeating access points.)
- an "N router / access point" that has 4 times the range of a normal
wireless access point.
the product below would be fine:
http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1144763513404&pagename=Linksys%2FCommon%2FVisitorWrapper
you'd also need an "N" adapter for your PCs since regular b or g adapters do
not get the speed or range advantage.
- yet another (expensive) option is to get a fiber cable laid down between
the two buildings with fiber-to-Cat5 transceivers on both ends. I've
connected buildings 2 km. apart with this approach. There are 2 kinds of
transceivers, one kind is very expensive and is good over long distances,
but for up to 500m. you can utilize the more affordable technology (about
£10 per transceiver) and don't notice the difference but the problem with
fiber is that the cable itself is very expensive (about £4 / meter.) and
should mostly be laid down in a straight line.
----- Original Message -----
From: "Andy Macnaughton-Jones" [EMAIL REMOVED]
To: [EMAIL REMOVED]
Sent: Sunday, April 30, 2006 10:39 PM
Subject: RE: FN-FORUM: Network over ringmain
I've a client who's got a farm and wants to network the packing shed to the
main office. There is a cable trunk between the two that carries a phone
line and power line - distance is about 100-150m. He's tried his wireless
network up in the shed but there's no signal - not really surprising given
the distance and buildings in the way. He could install a booster or change
the aerial on the wireless access point or he could install a repeater half
way - which fortunately is in the piggery so has power.
What's going to be the most cost effective way - what's the limit on a
standard cat5 cable run, I've seem 100m mentioned but is that an actual
limit and anything over that would cause problems or does it simply start
reducing the speed. It wouldn't matter if it was running at 10mpbs over the
distance.
Any real world advice would be most useful.
Cheers
Andy
-----Original Message-----
From: [EMAIL REMOVED] [EMAIL REMOVED] On Behalf Of ege
iyioglu
Sent: Sunday, April 30, 2006 8:15 PM
To: Andy Macnaughton-Jones
Subject: Re: FN-FORUM: Network over ringmain
Hello
I suggest that you don't invest in such a technology yet as it has quite a
few problems in real-life environments.
The suggested 85 Mbps speed remains in theory, and is only possible under
optimum conditions and between short distances (a very well designed power
infrastructure free of pikes, surges etc. and no replicator / extension
plugs in use anywhere in the grid.) the real speed you experience is usually
10 mbits and sometimes even lower than that if you have a big house with
lots of high power appliances (ovens, heaters, AC units etc.)
If your aim is to connect 2 Pcs together, I would suggest investing around
£50-60 in a wireless router (PcWorld sells packages that include wireless
adapters for laptops or desktops.) that usually provides 54 Mbps even under
slightly unfavorable conditions (like thick walls) and usually even more (up
to 108 Mbps by using the right channel.). After this initial investment,
it's possible to connect additional computers to the network by purchasing
an adapter for each PC. (usually costing between £15-25 each.) Each wireless
access point / router can support up to 30 PCs without any performance
penalties. After 30, it's best to get a secondary access point.
Regards
Ege
----- Original Message -----
From: "SimonMartin" [EMAIL REMOVED]
To: [EMAIL REMOVED]
Sent: Sunday, April 30, 2006 4:48 PM
Subject: FN-FORUM: Network over ringmain
>
> Hi,
>
> Has anyone had any experience with this setup:
>
> http://www.devolo.co.uk/uk_EN/produkte/dLAN/mldlanhsstarterkit.html
>
> I'm wanting to use it with OSX.
>
> Comments gratefully received.
>
> Thanks!
>
> Simon
>
> Simon Martin
>
> Get a free email address at http://www.ippimail.com and
> support your favorite charity without it costing you a penny.
> It's email. For good.
>
>
>
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