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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
A 3.7m Prodeline dish for Astra 2D
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<blockquote data-quote="pjgregory" data-source="post: 557486" data-attributes="member: 288654"><p>Now that I have my green laser pointer, I can mount the feed horn. I wrapped the laser in two places with a thin layer of sticky backed foam followed by layers of clear packing tape until it was a slide fit into the waveguide. </p><p></p><p>For the Invacom ADF-120 adjustable feed horn, the protursion of the wave guide in front of the scaler ring is given as 5mm for a 0.35 f/d ration dish which is the value specified by Prodeline. I used a little "Locktight" to secure the ring.</p><p></p><p>Now a question. When installing the assembly onto the dish, do you measure the focal length from the front of the protusion or the front surface of the scaler ring? As these are 5mm apart, it could make a difference.</p><p></p><p>PJG</p></blockquote><p></p>
[QUOTE="pjgregory, post: 557486, member: 288654"] Now that I have my green laser pointer, I can mount the feed horn. I wrapped the laser in two places with a thin layer of sticky backed foam followed by layers of clear packing tape until it was a slide fit into the waveguide. For the Invacom ADF-120 adjustable feed horn, the protursion of the wave guide in front of the scaler ring is given as 5mm for a 0.35 f/d ration dish which is the value specified by Prodeline. I used a little "Locktight" to secure the ring. Now a question. When installing the assembly onto the dish, do you measure the focal length from the front of the protusion or the front surface of the scaler ring? As these are 5mm apart, it could make a difference. PJG [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
A 3.7m Prodeline dish for Astra 2D
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