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<blockquote data-quote="koansrc" data-source="post: 457545" data-attributes="member: 244790">cheers crossbones, I think the mirror trick is one way to check the dish geometry and see if it's bouncing evrything back at the lnb and therefore checking if you've got the focal distance right. I think it should work and give some good indications if something is wrongMy problem ( and that's why i started this silly thread ) is that i now realize that it is very difficult to work with a 3m dish. I simply can't get to the upper half and tie strings and stick mirrors etc. , so I was looking for a way from working only from the lnb.Now, about the LEDs and the colour scheme. How about a christmas tree light rope, all the way around the perimeter which will rapidly flash in all sorts of patterns and have it's own 4-note xmas carol player feeding of the 18v. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue&nbsp; &nbsp; :p" loading="lazy" data-shortname=":p" /></blockquote>

[QUOTE="koansrc, post: 457545, member: 244790"] cheers crossbones, I think the mirror trick is one way to check the dish geometry and see if it's bouncing evrything back at the lnb and therefore checking if you've got the focal distance right. I think it should work and give some good indications if something is wrong My problem ( and that's why i started this silly thread ) is that i now realize that it is very difficult to work with a 3m dish. I simply can't get to the upper half and tie strings and stick mirrors etc. , so I was looking for a way from working only from the lnb. Now, about the LEDs and the colour scheme. How about a christmas tree light rope, all the way around the perimeter which will rapidly flash in all sorts of patterns and have it's own 4-note xmas carol player feeding of the 18v. :P [/QUOTE]

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