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Old 07-09-2010, 07:45 AM   #1
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original airstream antenna for wifi

I am on a farm where they have a repeater to amplify the wifi signal to my airstream, which reaches us but loses signal strength inside the airstream, probably the aluminum walls. Is there an adapter to could connect my roll up antenna on the roof to bring the signal to my ibook laptop and my instant stream Roku box for instance viewing of movies via laptop and router?
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Old 07-09-2010, 07:52 AM   #2
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I am not sure what frequency your roll up antenna is designed to recieve if any but it would need to be 5ghz or 2.4ghz. My guess is that it will do a poor job at this.

just my .02

Check this post as it might have some useful info. http://www.airforums.com/forums/f44/...nna-66563.html
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Old 07-09-2010, 07:53 AM   #3
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I am kind of in your predicament ...the router for free wifi is about 400 feet away, a person said to put a foil covered round plate (cardboard-CD-dishshell) on the far side of the router away from your laptop - and aimed back into your direction, and see if that strengthens the signal its supposed to. The others will know about this too. However I was also told that getting two bars is sufficient for a good signal when you are connecting. Also so situate yourself near the window towards that desired area.
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Old 07-09-2010, 08:01 AM   #4
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doubt the tele antenna will do much.

but folks DO build useful/effective signal gatherers for wifi...

google 'tin can antenna wifi' or CANTENNA or check out this link...

Homebrew antenna shootout

cheers
2air'
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Old 07-16-2010, 12:22 PM   #5
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wifi antenna

thanks so much for the feedback guys, still working on it
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Old 07-16-2010, 01:01 PM   #6
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I have half the parts lying around and at some future point may set up something like this.

In order to get much out of it you do have to have a 2.5Ghz specific antenna and it does have to be outside, above the roofline, and ideally pointed more or less towards the source.

I'm thinking in terms of some sort of telescoping mast on the A frame, like 2air's flags, with a surge suppressor for lightning safety in a 4x6" aluminum plate riveted to the skin behind the propane tanks. Then the electronics under the gaucho.

It becomes critical to use good quality coax and connectors in these sorts of setups because of the length of the cable and short wavelength.

Any shortcuts lead to a disappointing setup.
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Old 07-16-2010, 02:31 PM   #7
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Quote:
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...I'm thinking in terms of some sort of telescoping mast on the A frame...
i met a FORUM streamin' couple last winter (or 2 ? winters ago) in florida...

who had EXACTLY this set up on the A frame.

the husband used fiberglass telescoping antenna poles purchased on d'bay.

very cool setup with all the proper hardware AND electrical wizardry in place (and over my head).

i'll think of their forum name later and post it to ya...

after hinting that i'd be interested in having HIM build me something similar...

they quietly departed the campground...

cheers
2air'
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Old 07-16-2010, 04:14 PM   #8
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2air ... ya' s'pose that if some of us (several perhaps) could find them and hinted that we'd be willing to pay a reasonable sum for "having HIM build [us} something similar" we'd get a better response? Or even just ideas or plans or whatever?

I think 'tis a common problem, and I've been looking at a variety of solutions to this also. Lots of commercial solutions. Some of them are clearly snake oil, others perhaps not. Hard to tell without buying and trying, and that seems like a poor strategy to me.
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Old 07-16-2010, 06:24 PM   #9
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((keep in mind folks we've HIJACKED THIS THREAD from the original question))

Quote:
Originally Posted by AirsDream View Post
... ya' s'pose that if some of us (several perhaps) could find them and hinted ...
hi airs'

no i sorta doubt it. he's gainfully employed and busy, is my guess.

but i did DIG UP some of his public info on the antenna masts...

see post #2 here...

http://www.airforums.com/forums/f450...tml#post708813

and the LAST PICTURE in post #40 here...

http://www.airforums.com/forums/f415...tml#post652284

just so happens lois has a blog.

i'm not a blog reader but quickly scanning her work, it's PRETTY GOOD as blogs go...

and she's made a couple of entries about hank's lectrical gizmos...

here's one from just a few days before we crossed paths in florida ...

Livin' La Vida Trella! - Life on the Open Road with our Airstream: December 2008

again check out the PIX there in full resolution.
__________

so maybe 1 of U that's interested, could PM lois

and ask her to post a few details and maybe hank can 411 her...

what bits he used and why.

i'm NOT volunteering them, but a pm shouldn't hurt (be nice)...

cheers
2air'
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Old 07-16-2010, 06:27 PM   #10
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A 1LB. coffee can makes an almost perfect waveguide for 2+MHZ...(Don't ask me how I know)...Place a small probe in the can about 2" from the closed end and it should wokr for WiFi. The probe needs to be connected to the receiver and should be about 2"tall....we used to build HBO receivers using this design and it worked fine...
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