Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Rusting of Satellite Dishes

Working on this project concerned with rusting of satellites dishes
I would like any suggestions on any material that can be used in place of the regular ones that rust.
Thank you
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Default Rusting of Satellite Dishes

wrote:

Working on this project concerned with rusting of satellites dishes
I would like any suggestions on any material that can be used in place
of the regular ones that rust.



** Stainless steel & anodised aluminium are two.

Properly coated ( ie galvanised and powder coated ) steel does not rust.



.... Phil
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Default Rusting of Satellite Dishes

On Thursday, July 4, 2019 at 9:08:38 PM UTC-7, wrote:
Working on this project concerned with rusting of satellites dishes
I would like any suggestions on any material that can be used in place of the regular ones that rust.


If you can wire-brush the loose rust, an application of 'cold galvanize' paint (commonly
used for wire fences) will usually work. Keep it all clear of the aperture of the
receiver, though, JUST paint the metal dish.
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Default Rusting of Satellite Dishes

On Thu, 4 Jul 2019 21:08:36 -0700 (PDT), "
wrote:

Working on this project concerned with rusting of satellites dishes.


Rust never sleeps.

I would like any suggestions on any material that can be used in place of the regular ones that rust.
Thank you


Satellite dishes need to be accurate to about 1/10th wavelength
difference from a perfect parabola in order to work well. That makes
them rather difficult to repair.

I used to help maintain the satellite feed antennas at a local AM/FM
station located in a salt water lake. These rusting steel dishes:
http://www.learnbydestroying.com/jeffl/antennas/dish-move-project/index.html
were eventually replaced by these fiberglass equivalents:
http://www.learnbydestroying.com/jeffl/antennas/dish-new-install-project/index.html
Unfortunately, we had to later move one of the steel dishes:
http://www.learnbydestroying.com/jeffl/antennas/dish-move-03/index.html
The dish should have fallen apart from all the rust, but 2 years
later, is still functional and in one piece.
http://www.learnbydestroying.com/jeffl/antennas/dish-move-03/slides/DishMove03-004.html

The main advantages of fiberglass are somewhat easier to assemble, no
rust, no paint required, less reflected heat, and easier to clean.
However, the support structure and hardware are usually steel, and
will need to be protected from corrosion.

If you want details and particulars, my email address in the signature
works.

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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