Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
rain, fringe & prime focus
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Orthoclipse" data-source="post: 402908" data-attributes="member: 190790"><p>There are two main reasons given why small offset dishes outperform small prime focus dishes. </p><p></p><p>A prime feedhorn shadows more of the dish than an offset feed. As the dish size increases, this effect becomes less important.</p><p></p><p>Unlike prime feeds, offset feedhorns point away from the ground and are less prone to picking up ground noise.</p><p></p><p>re: your original question - water on the feed has a negligible impact in comparison to rain or moisture in the atmosphere.</p></blockquote><p></p>
[QUOTE="Orthoclipse, post: 402908, member: 190790"] There are two main reasons given why small offset dishes outperform small prime focus dishes. A prime feedhorn shadows more of the dish than an offset feed. As the dish size increases, this effect becomes less important. Unlike prime feeds, offset feedhorns point away from the ground and are less prone to picking up ground noise. re: your original question - water on the feed has a negligible impact in comparison to rain or moisture in the atmosphere. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
rain, fringe & prime focus
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top