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<blockquote data-quote="John" data-source="post: 1072596" data-attributes="member: 175005">... had this bit of a whim this afternoon between the rain showers about returning to an idea i meddled with on a Ku feed some years ago that wasn't all that successful.&nbsp; On my 1.2 Gibby 18GHz L/R/H/V Ka rig i use an 18GHz scalar feed off a Hughes ODU.&nbsp; It very slightly over illuminates but is the best matching feed i have found for this dish up to now.&nbsp; So, with a bit of scrap 20mm wide x 2mm thick ali strip i shaped it around the edge of the Hughes feed with a jubilee clip to hold it in place to bring the feed angle to 70° to suit the Gibby&nbsp; - nothing scientific - just a poke and hope experiment to pass an hour or so.&nbsp;&nbsp; The result was positive without doing any adjustment on focal point tweaking etc but the heavens started to open up again so&nbsp; just put a temp plastic bag over the feed to keep the water out.&nbsp; Certainly worth making a new proper job of one when&nbsp; i feel like it.Just a few pics and the original comparison note. Test freq was the comms freq - 18.561 V on 19.2°East as it's quite stable.....................................................................................................................................................................................................................................................................................................</blockquote>

[QUOTE="John, post: 1072596, member: 175005"] ... had this bit of a whim this afternoon between the rain showers about returning to an idea i meddled with on a Ku feed some years ago that wasn't all that successful. On my 1.2 Gibby 18GHz L/R/H/V Ka rig i use an 18GHz scalar feed off a Hughes ODU. It very slightly over illuminates but is the best matching feed i have found for this dish up to now. So, with a bit of scrap 20mm wide x 2mm thick ali strip i shaped it around the edge of the Hughes feed with a jubilee clip to hold it in place to bring the feed angle to 70° to suit the Gibby - nothing scientific - just a poke and hope experiment to pass an hour or so. The result was positive without doing any adjustment on focal point tweaking etc but the heavens started to open up again so just put a temp plastic bag over the feed to keep the water out. Certainly worth making a new proper job of one when i feel like it. Just a few pics and the original comparison note. Test freq was the comms freq - 18.561 V on 19.2°East as it's quite stable. .................................................................................................................................................................................................................................................................................................... [/QUOTE]

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