Picture of Two quicky directional wifi antennas
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These are just a couple of wifi antennas I cooked up real quick.

If you are interested in antennas, check this one out: http://www.instructables.com/id/Foil-based-fractal-antenna/

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Step 1: Parts Needed

Picture of Parts Needed
Usb wifi adapter.
Usb extension cable.
Plastic salad bow.
2 coat hangers
Large parabolic screen from children's toy.

Wire cutters

Step 2: Parabolic antenna prep

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Take parabolic screen and use wire cutters to make a hole for the usb wfi adapter to fit.
Insert wifi adapter.
Lay unit face down for a minute.

Step 3: Finish parabolic screen.

Picture of Finish parabolic screen.
Bend coat hanger to make stand for antenna
Insert stand into parabolic screen.

Step 4: Salad bowl antenna

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Drill hole in salad bowl to fit usb wifi adapter.
Surround bowl with foil.
Tape down.
Insert wifi adapter.
Lay bowl face down fior a minute.

Step 5: Mount

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Bend coat hanger to fit.

Step 6: Finish Salad bowl antenna

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Bend coat hanger to support bowl.
Put bowl in stand.

Hope you enjoy these directional wifi antennas.

Step 7: Mount it.

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We decided to take a previous project and modify it for this project. Never ending uses for tripods.

Step 8: Home made parabola?

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I had been thinking about solar cookers when I found this small picture of a parabola form. Seemed unusable at first. So using a image viewer, I enlarged the picture and then printed out. After that I then cut around the splines with scissors. I taped it up. A parabola it is.

Then comes the fun part. I printed out a second form and then glued aluminium foil to the form. Let that dry. then used the scissors to cut around the form again. Looking more interesting. Then I taped up the spines together to get an aluminium foil parabola. Now I am working on an even larger version. Awsome!

Step 9: More precise parabola,

Picture of More precise parabola,

Article that is about experimenting with parabolas.


servant744 years ago
I was wondering if aluminum paint would work instead of the foil?

Thanks for the instructable.
if the paint contains actual aluminium in a considerable concentration, i cannot see why not.
Computothought (author)  servant744 years ago
Thank you for the comment. That would be a good question to ask the maker of the paint you expect to use. You could try it and if it does not work, you can still do the foil.
agis684 years ago
U should use better images...What if my wife need her salad ball?

Another instructable on the same issue...I prefer a metal parabolic dish but anyway....
Computothought (author)  agis684 years ago
You can get those bowls for a dollar. as for the images.
ac7ss4 years ago
I have used a pie tin as a reflector, I mounted it 1/4 wavelength from the vertical antenna. (just mounted the receiver on the wall and put the tin over it.)
Computothought (author) 4 years ago
Thankyou for your comment. When I get a chance I probably will replace it.