C band dish diagram

[dssnosher]

Gents, are there any resources online that can guide me on characteristics and diagrams on a C band dish? My uncle owns a metal works shop and he is up to try make satellite dish but he needs drawings for it and a info on what to coat it with. Any help would be appreciated!

 

[Terryl]

What are you going to make it out of???

Aluminum panels or a spun aluminum type? Is so then all you need is some good flat white metal paint rated for outdoors.

An all steel parabolic dish for "C" band would be very heavy.

Wire mesh? (supported) If so then the same thing for the paint.

Re-enforced fiberglass? If so then a thick coating (or multiple coatings) of aluminum paint between the last layers would work, or an aluminum window screen layer would also work.

Here is some info for making a parabolic dish antenna.
Parabolic reflector - Wikipedia

And a link to how to make a polar mount for it.
DIY Horizon to Horizon Polar Mount

 

[TJExcalibur]

What are you going to make it out of???

Aluminum panels or a spun aluminum type? Is so then all you need is some good flat white metal paint rated for outdoors.

An all steel parabolic dish for "C" band would be very heavy.

Wire mesh? (supported) If so then the same thing for the paint.

Re-enforced fiberglass? If so then a thick coating (or multiple coatings) of aluminum paint between the last layers would work, or an aluminum window screen layer would also work.

Here is some info for making a parabolic dish antenna.
Parabolic reflector - Wikipedia

And a link to how to make a polar mount for it.
DIY Horizon to Horizon Polar Mount

And the best of luck!

 

[RimaNTSS]

@dssnosher Could you specify the planned size of the dish?

 

[Channel Hopper]

Since it is going to be from an engineering workshop dealing with metal fabricating then spun, or vacuum press is most likely.

 

[RimaNTSS]

spun, or vacuum press is most likely.

TBH, I think any of them are not possible and therefore will never be done. Another case is bending metal angles to make the frame and then cover it with metal mesh. But also this is not really possible. Much easier is to buy the
dish very cheap and enjoy satellite TV.

 

[dssnosher]

My uncle's shop has all heavy machinery to work with steel and aluminum including melting, casting, sheet pressing and bending. All I am paying for is materials. My plan was to try and make 1.2 offset to see how it performs against the one I already have and If all is well we will go for 300cm 6 aluminum pellet dish.

 

[dssnosher]

What are you going to make it out of???

Aluminum panels or a spun aluminum type? Is so then all you need is some good flat white metal paint rated for outdoors.

An all steel parabolic dish for "C" band would be very heavy.

Wire mesh? (supported) If so then the same thing for the paint.

Re-enforced fiberglass? If so then a thick coating (or multiple coatings) of aluminum paint between the last layers would work, or an aluminum window screen layer would also work.

Here is some info for making a parabolic dish antenna.
Parabolic reflector - Wikipedia

And a link to how to make a polar mount for it.
DIY Horizon to Horizon Polar Mount

If dish will be made from aluminum, just metal paint?

 

[RimaNTSS]

@dssnosher Lets make a bet: Your uncle will never make an offset 1.2m dish which will perform better better than Channel Master 1.2m or even Supral 1.2m. It is simply impossible, sorry. To make 3m PFA ..... well, could be done, but only for C-band and price, even for materials only will be much higher than buy used 3m PFA.
Could you firstly specify the illumination of the feed you are going to build your "dream" antenna?
I personally think, it is only the science fiction you are presenting here.

 

[Terryl]

If dish will be made from aluminum, just metal paint?

Just use a flat white outdoor rated paint for metal and your set......Or any color you choose but make shure is flat and not glossy or semi gloss.

 

[Terryl]

And be sure to paint it inside out of the Sun, I had a guy try and paint his dish when the Sun was in the right spot, he burned his arm.

 

[Channel Hopper]

My uncle's shop has all heavy machinery to work with steel and aluminum including melting, casting, sheet pressing and bending. All I am paying for is materials. My plan was to try and make 1.2 offset to see how it performs against the one I already have and If all is well we will go for 300cm 6 aluminum pellet dish.

C band on a 1.2 is going to limit what you can get, if you are trying to receive signals in Ukraine

I could certainly help with the six petal design for centre focus, but it is better you go for eight panels to keep the eventual box dimensions down (and you can utilise a four bolt feed which is a more stable / adjustable model). If you keep to a good tolerance , and I mean under 2mm on the surface, then it is possible you can be successful in Ku band reception with this size.

Are you thinking of going into production if you have a repeatable design prototype ?

 

[dssnosher]

@dssnosher Lets make a bet: Your uncle will never make an offset 1.2m dish which will perform better better than Channel Master 1.2m or even Supral 1.2m. It is simply impossible, sorry. To make 3m PFA ..... well, could be done, but only for C-band and price, even for materials only will be much higher than buy used 3m PFA.
Could you firstly specify the illumination of the feed you are going to build your "dream" antenna?
I personally think, it is only the science fiction you are presenting here.

What's with the hostility? It's a DIY project i'm looking for for inputs but all i'm getting from you is skepticism. Easy up mate. Let me worry about price and everything else please. Cheers.

 

[dssnosher]

C band on a 1.2 is going to limit what you can get, if you are trying to receive signals in Ukraine

I could certainly help with the six petal design for centre focus, but it is better you go for eight panels to keep the eventual box dimensions down (and you can utilise a four bolt feed which is a more stable / adjustable model). If you keep to a good tolerance , and I mean under 2mm on the surface, then it is possible you can be successful in Ku band reception with this size.

Are you thinking of going into production if you have a repeatable design prototype ?

1.2 offset will be used for prototyping and testing on KU satellite. No plans for production at all at the moment. We were having beers and I was telling my uncle how difficult it was to come across a large dish and he offered to try it in his shop. I was looking for 300cm when we were discussing so both are more on DIY hobby side rather then production. His shop does metal framing production, has CNC machines and some other scary machinery.

 

[RimaNTSS]

Sorry @dssnosher , yes, skepticism, cuz I think if you have no idea about basics of the parabolic shape of satellite antenna, that it is all doubtful you will get result close to out-of-shelf product.

 

[dssnosher]

You once had no idea about basics of the parabolic shape as well. Let's not go this route.

 

[RimaNTSS]

That is why I am trying to prevent you to go wrong route and not try to invent the bicycle. You will never make shape of perfect (not even close to perfect) offset satellite antenna..... unless you invest lost of money in this project.... money which will be lost, as you will never be able to sell your product and make any profit.
Did you try to Google it?