yagi antennas

floatingbeaver · Post by **floatingbeaver** » Sun Feb 19, 2006 12:03 pm

Hey folks anyone know of the company in Toronto who has the design and drawings for yagis? Or anywhere else in Canada but I know there is one company out of the T.O area. Thanks F.B

CID · Post by **CID** » Sun Feb 19, 2006 2:00 pm

What kind of yagi? A TV antenna or for one of those wildlife trackers?

ettw · Post by **ettw** » Sun Feb 19, 2006 2:23 pm

Not sure which company you are refering to but there is information on designing and building yagis on the Amateur Radio Relay League web site (http://www.arrl.com) and on the Canadian Amateur website (http://www.rac.ca) if that is of any interest to you

Airtids · Post by **Airtids** » Sun Feb 19, 2006 2:29 pm

Try Lotek. If you're also in need of an LSTC in order to attach them legally, PM I may be able to help.

http://www.lotek.com/

Cargodog · Post by **Cargodog** » Mon Feb 20, 2006 7:38 am

If you look around you can find a blueprint of how to make a yagi with a pringles can, a wire, and some washers.

By creating two of them and using line of sight, you can create a little wireless network over some huge distances with neighbours.

You can also use a coffee can.

http://www.g4tv.com/screensavers/featur ... tenna.html

Dust Devil · Post by **Dust Devil** » Mon Feb 20, 2006 8:30 am

Cargodog wrote:If you look around you can find a blueprint of how to make a yagi with a pringles can, a wire, and some washers.

By creating two of them and using line of sight, you can create a little wireless network over some huge distances with neighbours.

You can also use a coffee can.

http://www.g4tv.com/screensavers/featur ... tenna.html

I actually did this but I got better results with a coffee can.

http://www.turnpoint.net/wireless/cantennahowto.html

I see that g4 link has a link to the above site as well

was able to connect to my wireless network 1.5 miles away. christ here in saskatchewan you should be able to get a line of sight connection atleast 100 miles away

Just had to say it before someone else did.

Cargodog · Post by **Cargodog** » Mon Feb 20, 2006 9:17 am

I've been wanting to try this for a couple of years now... And agree that the cantenna should pull in some better signals with less loss and is a snap to make (or appears to be) so long as you use the correct measurements to figure the wavelength.

The items I need to find are a wireless router with an external antenna port (not sure if my netgear has one), and some proper wire to make a pigtail.

Dust Devil · Post by **Dust Devil** » Mon Feb 20, 2006 9:51 am

Cargodog wrote:I've been wanting to try this for a couple of years now... And agree that the cantenna should pull in some better signals with less loss and is a snap to make (or appears to be) so long as you use the correct measurements to figure the wavelength.

The items I need to find are a wireless router with an external antenna port (not sure if my netgear has one), and some proper wire to make a pigtail.

I opened my D-Link router and found a simple pigtail connector inside that I was able to connect to with off the shelf radio shack gear. different manufatures use different connectors but you should be able to get them at radio shack. or source or what ever it's called.

Cargodog · Post by **Cargodog** » Mon Feb 20, 2006 10:17 am

Ok, I'll check out my etgear router, or maybe just pick up a cheap one that I can dismantle.

Trying to figure out what the cable length limitations are from the yagi to the router...

Swamp Donkey · Post by **Swamp Donkey** » Mon Feb 20, 2006 9:52 pm

Try these guys. They make some of the best antennas in Canada.

http://www.sinctech.com

Dust Devil · Post by **Dust Devil** » Mon Feb 20, 2006 10:04 pm

Swamp Donkey wrote:Try these guys. They make some of the best antennas in Canada.

http://www.sinctech.com

There's no fun in that.

CAL · Post by **CAL** » Thu Feb 23, 2006 1:57 pm

this is such a great idea...but obviously you need the router ......and I guess you need enough cable to run outside....how do yuo mount the antenna?

CAL · Post by **CAL** » Thu Feb 23, 2006 2:23 pm

Ok I am bit confused.....
Do you hook the canteena to your router with cable or via wireless?...in other words. I have a router inside how do I hook it up to the canteena because it has to be outside....

Dust Devil · Post by **Dust Devil** » Thu Feb 23, 2006 2:33 pm

CAL wrote:Ok I am bit confused.....
Do you hook the canteena to your router with cable or via wireless?...in other words. I have a router inside how do I hook it up to the canteena because it has to be outside....

Ya gotta get a stretch of coax cable and the connectors go on the ends of the cable. one end attaches to the router and the other to the cantenna.

Edo · Post by **Edo** » Thu Feb 23, 2006 8:19 pm

anyone try these with a cell phone?

We had some guys who were gonna rig one up with an old "bag" phone I think it was 1.5 watts

The idea was to get cell coverage to an outpost camp 30 miles away it would save huge money on sat phone calls.

anyway they forgot some connectors and it became a next year project.

Dust Devil · Post by **Dust Devil** » Thu Feb 23, 2006 8:38 pm

I've never tried it but I can't see why it wouldn't work

CAL · Post by **CAL** » Thu Feb 23, 2006 9:07 pm

thanks dd

Cargodog · Post by **Cargodog** » Fri Feb 24, 2006 5:45 am

One side would go:

Yagi -> Router -> Internet

The other side would go:

Yagi -> NIC card

It doesnt look like you can use regular TV coax as the signal will get absorbed in the first 6' of cable. You need some computer coax.

Here's some more good info:
http://home.carolina.rr.com/harothberg/cantennafaq.htm

This would allow say two neighbours to share an internet connection so long as they have line of sight. Not sure what speeds can be hard with this, but would assume it would be as fast as a a wireless router as the frequency is at 2.4 GHz I believe.

The question is, how long could the coax be, or possible just keep it short and run a small cable from the Yagi, to a wireless bridge, and the bridge would talk to the router. Or of course keep the router close to the yagi. There's a calculator, just use 2500 Mhz as the frequency and enter your distance.
http://www.timesmicrowave.com/cgi-bin/calculate.pl

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