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Posted

I need to connect a single PC to a LAN housed in a separate building around 150 metres away.

Have any of you fine folks any recommendations for the equipment I should look at?

The last time I did this it was to connect around 50 pc to a newtwork and I used an infra red system that cost US$50,000. Obviously that is way too much to connect a single pc.

I have looked at the Cisco Aironet kit and that looks ok, what else should I look at? It will only be needed for around 6 months.

Thanks folks.

Guest Reimar
Posted

For Point to Point I would use an Yagi Directional Antenna with 14 or 16 Beams.

But maybe you go to the Radiolabs Website HERE where you have also an calculator available, beside of lot infos, for to find out your need.

Cheers.

Posted (edited)

I have setup a system like that at the university to connect two of our research buildings that are too far for wired. It is an outdoor (weather proofed) WiFi access point/repeater and the way I use it is as a wireless-wired lan so it effectively appears as a wired connection between the two buildings. It operates at 108 MHz and cost around 13k per unit and will need two of them. Distance capable, in the kilometers. :o

Will look up the brand/model when I go to work tomorrow if interested. It uses POE (power over ethernet) so don't need to worry about a power supply outdoors.

I found the model I'm using > LevelOne for about 9,000 Baht. Seems price reduced since I bought them over a year ago.

Edited by Tywais
Posted
I have setup a system like that at the university to connect two of our research buildings that are too far for wired. It is an outdoor (weather proofed) WiFi access point/repeater and the way I use it is as a wireless-wired lan so it effectively appears as a wired connection between the two buildings. It operates at 108 MHz and cost around 13k per unit and will need two of them. Distance capable, in the kilometers. :o

Will look up the brand/model when I go to work tomorrow if interested. It uses POE (power over ethernet) so don't need to worry about a power supply outdoors.

I found the model I'm using > LevelOne for about 9,000 Baht. Seems price reduced since I bought them over a year ago.

Think you're a bit confused Ty :D

It operates at 2.4 Ghz (standard 802.11 b/g), but has a maximum throughput of 108 Mbps! Directional radio beams between 108 and 117.95 Mhz will mightily annoy aviation authorities :D (VOR)

The one single thing to look at is line of sight. 2.4 Ghz radio waves have almost no penetration power, so a couple of tree leaves can already break up your link!

If you do have a clear line of sight, and you can put up the antenna's high enough (google fresnel zone) some pretty impressive distance can be covered using cheap standard materials.

I once had a link up between 2 condo's over 10 km apart using standard access points with 16 db patch antenna's. Absolutely no obstacles between the two places though!

Posted
Think you're a bit confused Ty :D

It operates at 2.4 Ghz (standard 802.11 b/g), but has a maximum throughput of 108 Mbps! Directional radio beams between 108 and 117.95 Mhz will mightily annoy aviation authorities :D (VOR)

Nah, just badly worded. :o It has an effective LAN operational speed of 108Mbps. As for line of site, this is true with the addendum that this unit has a bit more output power then your standard access point and is combined with a 12dBi antennae to give it a pretty good punch that can go through moderate amount of obstruction and has been tested to 15kms. So at 150meters with trees shouldn't be much of an issue.

The 2.4GHz standard access point I have internal to the lab can go through a few concrete walls for a bit before being useless.

Did get a smile regarding your aviation comment. Annoying unless it hits 121.5 MHz. :D

Posted

It is a construction site and the pc is required to operate the permit to work system onboard the facility. There will be a lot of crane activity breaking the line of sight so it must be RF.

I have considered the going the Yagi route and building it myself but I really do not have the time. I just want a plug and play solution. I have been told the budget is not a problem, they just want the permit co-ordinator to have database access, Safety first and all that.

So, what are your thoughts for a plug and play option?

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