set up for hotspot 1/4 miles away

lazymofo · 10-26-2004

i planned to setup a antenna on the roof to pick up this hotspot little less than 1/4 miles away from my house, what kinda antenna is better for this? flant panel or omni directional? will 9.8 dbi do the job? can I hook up the antenna to linksys wet11 then run the wire to my pc? thanks in advance the help.

wrzwaldo · 10-26-2004

I would suggest you contact the owner/admin of the hotspot and see what they recommend.

highgain · 10-27-2004

Look at these antennas. 15db might do the job. You might also want to use 19db for better signal. You can find the cable on this web site too. How long is your cable run is going to be? Don't forget about cable loss.

highgain · 10-27-2004

shmitt... forgot the link

http://www.fab-corp.com/B1.htm

wrzwaldo · 10-27-2004

15 & 19 for a quarter mile? A bit of overkill!!

beakmyn · 10-27-2004

I use this to reach my garage.

Disclaimer: I'm joking, the dish is really for my cell phone I get real bad reception in my area. Not really, its not even me it some guy from a google image search.

wrzwaldo · 10-27-2004

I bet you could transmit to Uranus with that thing!

highgain · 10-27-2004

>>15 & 19 for a quarter mile? A bit of overkill!!

Maybe not. Not in my neighboorhood with a lot of pollution on 2.4Ghz band. More directivity you get - better.

Thorn · 10-27-2004

Quote:

Originally Posted by highgain

>>15 & 19 for a quarter mile? A bit of overkill!!

Maybe not. Not in my neighboorhood with a lot of pollution on 2.4Ghz band. More directivity you get - better.

That is just so much of what emerges from the south end of a northbound male bovine. Putting that much gain is adding to the pollution.

wrzwaldo · 10-27-2004

Quote:

Originally Posted by Thorn

That is just so much of what emerges from the south end of a northbound male bovine. Putting that much gain is adding to the pollution.

Exactly... It's more of the lack of knowledge "more must be better" syndrome.

highgain · 10-28-2004

So, you saying that omni would be less pollution? Instead of affecting much smaller area, with omni you will bleed all over 360 egrees. Directional antennas don't just amplify the power, they "squeeze" RF into tighter angle, which creates more gain. If you have tighter beam, there will be less polution to everyone else, except those in the signal path.

To the person who started the thread:
Why not try and build a pringles can antenna. Also referred as cantenna. It is only $10 to build and provides an impressive 12 to 16 db gain.

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

Thorn · 10-28-2004

Quote:

Originally Posted by highgain

So, you saying that omni would be less pollution? Instead of affecting much smaller area, with omni you will bleed all over 360 egrees.
...

No. I'm saying that for a quarter mile, that a 15dBi to 19dBi directional is overkill. It's like using an elephant gun to kill a mosquito.

Quote:

Originally Posted by highgain

... Directional antennas don't just amplify the power, they "squeeze" RF into tighter angle, which creates more gain. ...

Thanks for the lesson. As the guy who's written half the FAQs on antennae around here, I do have a bit of an idea on how directionals work.

Quote:

Originally Posted by highgain

... If you have tighter beam, there will be less polution to everyone else, except those in the signal path. ...

Read what you just wrote. It may be directional, but it's still adding to the noise level to those people who are downstream of the antenna. It may be good for the guy for the who wants the signal, bad for everyone else in that direction.

For a quarter of a mile with RF LOS, then then something on the order of an 8dBi should be adequate. It's just further proof that you should "do the math" for something like this. An RF system should be to properly designed to the do job, not overdo it.

lazymofo · 10-29-2004

thanks for all the advice!!!

the cable from the antenna to the linksys wet11 is about 5 feet, and run a long cat5 to downstair, will the length case any signal lose? can I use a wireless router if it is too long?

wrzwaldo · 10-29-2004

Quote:

Originally Posted by lazymofo

thanks for all the advice!!!

the cable from the antenna to the linksys wet11 is about 5 feet, and run a long cat5 to downstair, will the length case any signal lose? can I use a wireless router if it is too long?

The cat5 I presume will be ethernet? Then as long as you keep the length to less that 328ish feet you will be fine.

lazymofo · 11-01-2004

if I go with the cantenna instead of the omni antenna, can I just plug the pigtail to a wireless rounter and skip the wet 11 and all the ethernet wiring? will this pick up the signal?

10-26-2004	#1 (permalink)
lazymofo Registered Member Join Date: Oct 2004 Posts: 3	set up for hotspot 1/4 miles away i planned to setup a antenna on the roof to pick up this hotspot little less than 1/4 miles away from my house, what kinda antenna is better for this? flant panel or omni directional? will 9.8 dbi do the job? can I hook up the antenna to linksys wet11 then run the wire to my pc? thanks in advance the help.

11-01-2004	#15 (permalink)
lazymofo Registered Member Join Date: Oct 2004 Posts: 3	cantenna if I go with the cantenna instead of the omni antenna, can I just plug the pigtail to a wireless rounter and skip the wet 11 and all the ethernet wiring? will this pick up the signal?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

10-26-2004	#2 (permalink)
wrzwaldo I amuse you? Join Date: Dec 2003 Posts: 9,127	I would suggest you contact the owner/admin of the hotspot and see what they recommend.

10-27-2004	#3 (permalink)
highgain Registered Member Join Date: Oct 2004 Posts: 18	Look at these antennas. 15db might do the job. You might also want to use 19db for better signal. You can find the cable on this web site too. How long is your cable run is going to be? Don't forget about cable loss.

10-27-2004	#4 (permalink)
highgain Registered Member Join Date: Oct 2004 Posts: 18	shmitt... forgot the link http://www.fab-corp.com/B1.htm

10-27-2004	#5 (permalink)
wrzwaldo I amuse you? Join Date: Dec 2003 Posts: 9,127	15 & 19 for a quarter mile? A bit of overkill!!

10-27-2004	#6 (permalink)
beakmyn root\.workspace\.garbage. Join Date: Aug 2003 Posts: 4,796	I use this to reach my garage. Disclaimer: I'm joking, the dish is really for my cell phone I get real bad reception in my area. Not really, its not even me it some guy from a google image search.

10-27-2004	#7 (permalink)
wrzwaldo I amuse you? Join Date: Dec 2003 Posts: 9,127	I bet you could transmit to Uranus with that thing!

10-27-2004	#8 (permalink)
highgain Registered Member Join Date: Oct 2004 Posts: 18	>>15 & 19 for a quarter mile? A bit of overkill!! Maybe not. Not in my neighboorhood with a lot of pollution on 2.4Ghz band. More directivity you get - better.

10-28-2004	#11 (permalink)
highgain Registered Member Join Date: Oct 2004 Posts: 18	So, you saying that omni would be less pollution? Instead of affecting much smaller area, with omni you will bleed all over 360 egrees. Directional antennas don't just amplify the power, they "squeeze" RF into tighter angle, which creates more gain. If you have tighter beam, there will be less polution to everyone else, except those in the signal path. To the person who started the thread: Why not try and build a pringles can antenna. Also referred as cantenna. It is only $10 to build and provides an impressive 12 to 16 db gain. http://www.turnpoint.net/wireless/cantennahowto.html

10-29-2004	#13 (permalink)
lazymofo Registered Member Join Date: Oct 2004 Posts: 3	thanks for all the advice!!! the cable from the antenna to the linksys wet11 is about 5 feet, and run a long cat5 to downstair, will the length case any signal lose? can I use a wireless router if it is too long?