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Making low-cost, light-weight, portable C/Ku-band dish antenna
Dear friends,

Me and my Facebook friends are toying with the idea of making a semi-compact, low-cost, light-weight and portable 5 feet (152.4cm) C/Ku-band prime-focus antenna. This is primarily aimed at home or domestic users. It can be easily made and used by satellite / dth hobbyists and enthusiasts.

We will post the steps to make it, materials & tools needed, pics of complete assembled dish. Also we will review the signal strength/quality, performance of the antenna, limitations etc.

This will be handy to people who stay on rent as it can be dismantled easily and carried elsewhere or kept away packed. The reception will be quite decent almost comparable to professionally built system.
So keep watching... We will present this soon. (Thanks to all my friends who were fed up of devotional channels and inspired me to make this.)

The assembled reflector without the Stand/LNB arm will look like this:

[Image: wg7dm.jpg]

So Step 1: Calculating and Plotting of the Parabola.

My dish is 5 feet in diameter and it is prime focus. I am going to double the offset focus curve that I have plotted by using co-ordinates below.

Next: I will post the final curve plotted on a newspaper.

[Image: 388193_201120556639736_100002253792345_4...5054_n.jpg]

Step 2: Some more calculations for the intermediate points of the curve and the final plotting on a newspaper.

[Image: 377166_201242929960832_100002253792345_4...2927_n.jpg]

Plotting the curve on the x and y axes:
[Image: 374216_201243003294158_100002253792345_4...9099_n.jpg]

Join the points to form the final curve:
[Image: 374186_201242956627496_100002253792345_4...5978_n.jpg]

The full dish curve, LNB arm length, dish depth along with LNB placement

[Image: 377409_201566623261796_100002253792345_4...2110_n.jpg]

Next: Bending the Aluminium ribs along this curve.



Regards,
Vinay K .........___/(>)))
Satellite Systems, Electronics & Cable TV Specialist






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waiting to see more from you
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Waiting for you to tell about bending. Interesting thread Smile
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eager to see how u show the next steps cant wait post soon Smile
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Vinay you are making suspense. Show us the next step. It is like giving ad break when interesting thing happens.
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Hey Friends,
I have completed 2 phases of production. Now the semi-final phase of testing is going on.
I have recorded the entire process of bending strips and assembling in Full High-Definition 1080p and will post it very soon.
Can some one from Admin team please confirm if Full HD Videos (huge file size) are supported by this site? If not then I will use my Youtube channel.
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@vinay,

Above 2MB the server doesn't accept.

It will be good if you upload the video to your YouTube channel and then post the video.
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vinay show more
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(Tuesday 27-December-2011, 15:32)vinay_kumar Wrote: Hey Friends,
I have completed 2 phases of production. Now the semi-final phase of testing is going on.
I have recorded the entire process of bending strips and assembling in Full High-Definition 1080p and will post it very soon.
Can some one from Admin team please confirm if Full HD Videos (huge file size) are supported by this site? If not then I will use my Youtube channel.
Uploaded?

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Admin ... Please Help. I am not able tp edit my Posts. Need to add watermarked photos and videos.
[-] The following 1 user says Thank You to vinay_kumar for this post:
  • waqar
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