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
Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Focal Point
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="Channel Hopper" data-source="post: 5449" data-attributes="member: 175144"><p>Answers are no and no</p><p></p><p>Offst dishes are in effect a section of a prime focus parabola, and as such the length of feed rod is approximately the focal distance of a much larger prime focus antenna.</p><p></p><p>Testing by adjustment is long winded as adjusting the distance of the LNB from the antenna can alterthe focuspoint of the dish, and the maximum gain achieved in testing could be affected by non adjustment of the elevation of the antenna to the satellite.</p><p></p><p>Also the offset dishes are rarely the size quoted, some manufacturers use the horizontal dimension as the advertised size, and many installations fall foul of planning permission limits because of this.</p><p></p><p>What make is it, I may be able to pull the critical dimensions you need from the suppliers if I have some further details</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 5449, member: 175144"] Answers are no and no Offst dishes are in effect a section of a prime focus parabola, and as such the length of feed rod is approximately the focal distance of a much larger prime focus antenna. Testing by adjustment is long winded as adjusting the distance of the LNB from the antenna can alterthe focuspoint of the dish, and the maximum gain achieved in testing could be affected by non adjustment of the elevation of the antenna to the satellite. Also the offset dishes are rarely the size quoted, some manufacturers use the horizontal dimension as the advertised size, and many installations fall foul of planning permission limits because of this. What make is it, I may be able to pull the critical dimensions you need from the suppliers if I have some further details [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Focal Point
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
