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DISH SETUP: Single sat, Multi-Sat & Motorised
Multi-lnb losses off prime focus
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<blockquote data-quote="Dggrr" data-source="post: 1094626" data-attributes="member: 238167"><p>[USER=283969]@all[/USER], Many thanks for the replies</p><p></p><p>The terms prime/primary focus seem to get used confusingly around the Internet when it comes to prime focus/centre fed dishes and multi-lnb on offset setups. I've been using "prime focus" here to refer to an offset dish that is pointed at 10E and all other LNBs are offset from this, i.e. not pointed halfway between 10E and 7E. This was based on the observation that 10E feeds are often very weak.</p><p></p><p>[USER=332642]@a33[/USER] - thanks for the reminder on my earlier post which I had completely forgotten about! In my defence, it took me nearly four years to run a cable to the 75mm post for the CM 1.2 that I had put up at the the top of the garden - shortly after the 2016 post, I went to work in France for a couple of years. I'm now "economically inactive" and have lots of time.</p><p></p><p>I did try a few efforts with the CM1.2 at multi-LNB, but like ozumo did not have much success. I recently got an OP125L which is a dream for multi-LNB. Although both about 1.2M , the CM and the Gibertini are vastly different, as shown by their focal distances, CM=820mm, Gib=975mm.</p><p></p><p>I'll give the 16E LNB a go sometime.....</p></blockquote><p></p>
[QUOTE="Dggrr, post: 1094626, member: 238167"] [USER=283969]@all[/USER], Many thanks for the replies The terms prime/primary focus seem to get used confusingly around the Internet when it comes to prime focus/centre fed dishes and multi-lnb on offset setups. I've been using "prime focus" here to refer to an offset dish that is pointed at 10E and all other LNBs are offset from this, i.e. not pointed halfway between 10E and 7E. This was based on the observation that 10E feeds are often very weak. [USER=332642]@a33[/USER] - thanks for the reminder on my earlier post which I had completely forgotten about! In my defence, it took me nearly four years to run a cable to the 75mm post for the CM 1.2 that I had put up at the the top of the garden - shortly after the 2016 post, I went to work in France for a couple of years. I'm now "economically inactive" and have lots of time. I did try a few efforts with the CM1.2 at multi-LNB, but like ozumo did not have much success. I recently got an OP125L which is a dream for multi-LNB. Although both about 1.2M , the CM and the Gibertini are vastly different, as shown by their focal distances, CM=820mm, Gib=975mm. I'll give the 16E LNB a go sometime..... [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Multi-lnb losses off prime focus
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