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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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#1
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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 |
#2
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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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#4
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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. |
#5
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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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