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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
DISH ALIGNMENT PROBLEMS?
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<blockquote data-quote="Old Satellite" data-source="post: 5296" data-attributes="member: 175277"><p>[updated:LAST EDITED ON 01-Jun-02 AT 01:17 PM (GMT)]Do not adjust the rear support on the dishes without the dish being strung for flatness of the face. It is very easy to pool the dish out of shape and it is extremely difficult to pull it back to full operational use if it is pulled to much.</p><p></p><p></p><p></p><p>What were the results when you carried out the below ? </p><p></p><p>Please try the following set 87.0 GE3 etc has you have previously to your high point declination,Inclination correct for your location.</p><p></p><p></p><p>Mark your pole from the starting point. masking tape and pencil works well.</p><p></p><p>Set up channels in KU band only if you track the C band first then you will after fine tune the whole process again.</p><p>Then slowly rotate with your jack to the next satellite lets say GE 1 (103.0)which should be a good signal and then turn opposite to Galaxy 6 etc.</p><p>Check the signal at all three locations. gently lift the dish (Manually)slightly at Ge 1 and Galaxy 6 to see which way you need to move the dish.</p><p></p><p>Those three satllite are so close and high power 49+ Db that when you rotate with your jack that the movement on elevation is small.</p><p></p><p>Feed horn alignment- chose one and then leave the others alone for the moment, either the ADI or the Co rotor with adjustable FD.</p><p></p><p>Set the Fd from the front face of the dish to 1/8 inside of the feedhorn (KU) That will be close enouth for setup the Polar arc</p><p></p><p>Measure from the feedhorn to the outer rim face at three points 120 degrees apart are as close as you can.are they equal to within 1/32 inch?</p><p></p><p>Normally the guide at geo cities is pretty good as referance for all of these items.</p><p></p><p>The quad feed dual c and KU band normally requires extensive knowledge to set up. and can only be accomplished properly with a signal analyser. even then it is time consuming for the best reception.</p><p></p><p>Ps do every thing very slowly, try to take some photos of your mount and dish and attach so that we can see how it looks currently, then we can try to help again.</p><p></p><p>My own 3.7 took around half a day with a signal analyser to full align the feed horn correctly (ADI) ps the corotor is not as good as the ADI due to the teflan slab.</p><p></p><p>Still travelling so sorry for the delay</p><p></p><p>regards</p><p>Old Satellite</p></blockquote><p></p>
[QUOTE="Old Satellite, post: 5296, member: 175277"] [updated:LAST EDITED ON 01-Jun-02 AT 01:17 PM (GMT)]Do not adjust the rear support on the dishes without the dish being strung for flatness of the face. It is very easy to pool the dish out of shape and it is extremely difficult to pull it back to full operational use if it is pulled to much. What were the results when you carried out the below ? Please try the following set 87.0 GE3 etc has you have previously to your high point declination,Inclination correct for your location. Mark your pole from the starting point. masking tape and pencil works well. Set up channels in KU band only if you track the C band first then you will after fine tune the whole process again. Then slowly rotate with your jack to the next satellite lets say GE 1 (103.0)which should be a good signal and then turn opposite to Galaxy 6 etc. Check the signal at all three locations. gently lift the dish (Manually)slightly at Ge 1 and Galaxy 6 to see which way you need to move the dish. Those three satllite are so close and high power 49+ Db that when you rotate with your jack that the movement on elevation is small. Feed horn alignment- chose one and then leave the others alone for the moment, either the ADI or the Co rotor with adjustable FD. Set the Fd from the front face of the dish to 1/8 inside of the feedhorn (KU) That will be close enouth for setup the Polar arc Measure from the feedhorn to the outer rim face at three points 120 degrees apart are as close as you can.are they equal to within 1/32 inch? Normally the guide at geo cities is pretty good as referance for all of these items. The quad feed dual c and KU band normally requires extensive knowledge to set up. and can only be accomplished properly with a signal analyser. even then it is time consuming for the best reception. Ps do every thing very slowly, try to take some photos of your mount and dish and attach so that we can see how it looks currently, then we can try to help again. My own 3.7 took around half a day with a signal analyser to full align the feed horn correctly (ADI) ps the corotor is not as good as the ADI due to the teflan slab. Still travelling so sorry for the delay regards Old Satellite [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
DISH ALIGNMENT PROBLEMS?
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