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Message: <blockquote data-quote="Satcom1" data-source="post: 612633" data-attributes="member: 302061">My project has to capture as many C Band channels as I can on a small dish. The Primestar 1m X .7m was chosen because of it's common availability in USA. It was manufactured by Channel Master and is still in production through Andrew Corporation but only as a commercial grade antenna.The dish was used for the Primestar DSS service and had a KU LNBF with an elliptical Scalar ring. In another project I took a Standard LNBF voltage controlled for V/H and cut off the conical Scalar ring and fixed the LNBF to the P*E Scalar with Crazy Glue. It was an improvement in that the new LNBF is rated at .3 N/F , added voltage controlled switching and provides more conversion gain. This dish when used with any conical Scalar performs like a .7m offset dish. With the Elliptical Scalar it works better than a .9m dish.So onto C Band. The dish is not illuminated properly by using a flat Scalar ring and with a conical Scalar performs like a .7m dish. Walrus 1957 developed a high performance Conical Scalar cone set to maxumize performance of a 1m offset dish. In testing it outperforms the consumer manufactured conical rings.I made up a paper set of his stacked cone Scalar rings and then marked off the geometry scaled up from the P*E KU Scalar. These were then rolled flat and used as template for sheet aluminum parts. I also made a sleeve that slips over the 65mm C Band LNBF throat. The cones are assembled to this slip sleeve so that it can be reused on other LNBF.The cones are spaced 15mm apart, just as in his conical set. Performance of the dish is improved by a significant amount. The dish is motorized with a Stab H-H motor and tracks the arc with USALS.Conclusion:If a small size dish is desired or required this stacked set of cones will provide the maximum gain and cost very little <$5USD. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool    :cool:" loading="lazy" data-shortname=":cool:" />For most folks the conical Scalar ring (Second Picture) made for WS International kit # WS-KU2C KIT is easy and very cost effective to implement on a 1 meter offset dish for C Band Mini-BUD systems.</blockquote>

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