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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Precision 2.2 metre Antenna Install
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<blockquote data-quote="moonbase" data-source="post: 1016760" data-attributes="member: 178786"><p>Hi,</p><p></p><p>I only have a little bit of progress to report today as the day job got in the way. Anyway, I cleaned the antenna both sides with warm soapy water followed by lots of rinsing then a dry with some towel roll. I also repeated the string test using fishing line instead of the coarse twine I used in the first string test.</p><p></p><p>The rear side of the antenna was more dirty than the face but with the rear side it was general dirt and algae. The antenna face had some staining coming from the feed support arm holes, presumably from some type of bolt releasing fluid or lubricant running down the face from the arm holes. A clean with soapy water did not have much impact on the stains but the general light dirt on the face was removed.</p><p></p><p>During the cleaning, I noticed that the finished coating was quite thin in places. In some areas the aluminium although not directly visible is "blooming" through the coating. It shows up as a very pale blue tint where the coating is at its thinnest. It's not an issue that would impact on the performance of the antenna but I might consider applying a coat of paint in the future. I think the colour code is White RAL 9010, there should be no problem getting coded paint made up.</p><p></p><p>The other thing I noticed about the finish before cleaning was that the surface was very powdery. If I gently ran my fingers over the surface my finger tips were covered in white powder. I an not sure why this is, possibly due to the finish being very thin and losing its adhesion? Any feedback on this point would be most appreciated.</p><p></p><p>Finally, on the subject of the repeated string test with fishing line, I have come to the conclusion fishing line is a poor choice unless you are quick. After a while, the fishing line starts to sag, this might be due to it slipping in the tape holding it to the edges of the antenna or due to its own elasticity. However, when taught, the fishing line string test showed no gaps, same as the coarse twine test which seems to indicate the antenna is not warped.</p><p></p><p>Todays pics are attached below.</p><p></p><p></p><p>Rgds</p></blockquote><p></p>
[QUOTE="moonbase, post: 1016760, member: 178786"] Hi, I only have a little bit of progress to report today as the day job got in the way. Anyway, I cleaned the antenna both sides with warm soapy water followed by lots of rinsing then a dry with some towel roll. I also repeated the string test using fishing line instead of the coarse twine I used in the first string test. The rear side of the antenna was more dirty than the face but with the rear side it was general dirt and algae. The antenna face had some staining coming from the feed support arm holes, presumably from some type of bolt releasing fluid or lubricant running down the face from the arm holes. A clean with soapy water did not have much impact on the stains but the general light dirt on the face was removed. During the cleaning, I noticed that the finished coating was quite thin in places. In some areas the aluminium although not directly visible is "blooming" through the coating. It shows up as a very pale blue tint where the coating is at its thinnest. It's not an issue that would impact on the performance of the antenna but I might consider applying a coat of paint in the future. I think the colour code is White RAL 9010, there should be no problem getting coded paint made up. The other thing I noticed about the finish before cleaning was that the surface was very powdery. If I gently ran my fingers over the surface my finger tips were covered in white powder. I an not sure why this is, possibly due to the finish being very thin and losing its adhesion? Any feedback on this point would be most appreciated. Finally, on the subject of the repeated string test with fishing line, I have come to the conclusion fishing line is a poor choice unless you are quick. After a while, the fishing line starts to sag, this might be due to it slipping in the tape holding it to the edges of the antenna or due to its own elasticity. However, when taught, the fishing line string test showed no gaps, same as the coarse twine test which seems to indicate the antenna is not warped. Todays pics are attached below. Rgds [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Precision 2.2 metre Antenna Install
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