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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Feedhorn ident
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<blockquote data-quote="RimaNTSS" data-source="post: 904580" data-attributes="member: 312276"><p>TBH I do not know that. But I know another thing- illumination angle of feedhorn should be equal to opening angle of the antenna, only then you get maximum performance of SAT-system.</p><p>I've measured 1,8m Prodelins I have and found out that opening angle is almost 80*, so I suspect that original feedhorn for those antennas should have about 80* illumination angle.</p><p></p><p>Add: And another thing I do not know, is how to find out exact position of phase center of the feedhorn <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /></p></blockquote><p></p>
[QUOTE="RimaNTSS, post: 904580, member: 312276"] TBH I do not know that. But I know another thing- illumination angle of feedhorn should be equal to opening angle of the antenna, only then you get maximum performance of SAT-system. I've measured 1,8m Prodelins I have and found out that opening angle is almost 80*, so I suspect that original feedhorn for those antennas should have about 80* illumination angle. Add: And another thing I do not know, is how to find out exact position of phase center of the feedhorn :cool: [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Feedhorn ident
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