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
C-Band Reception, UK and Europe
NSS5 = tried again but failed
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="Vipersan" data-source="post: 734162" data-attributes="member: 325666"><p>Hmmm..</p><p>This oddity relating to global beams and having to slightly shift the dish left or right to maximise the signal is bugging me ..</p><p>I have a theory which is probably nonsense ..but here goes ..</p><p>If a global beam isn't actualy comprised of one cental antena ...but in fact 2 ...beams from 2 antenae aimed to the left and right beams ie West and East fucused by reflectors at the satellite itself...</p><p>..then its possible ..I'm summising ..that there is an overlap in the central area ..</p><p>If you place your dish/receiver under the beam of this overlap area ...</p><p>and its reasonably accurate and set up correctly ..</p><p>Is it possible the more acurate it is that 2 received beams carrying the same broadcast _could_ have a wave cancelling effect ...thus creating a null point ...aor at least greatly reduced point..??</p><p>My idea is that ..if you where to tilt your dish obliquely ..even slightly... at these 2 received beams ...</p><p>Could you find a point the the left or to the right of centre ...where the 2 beams/waves amplified the signal due to wave addition as opposed to subtraction ..??</p><p>ie ..in phase as opposed to out of phase ..?</p><p></p><p>As I said its just a theory ...and I do not know if a centralised global beam comprises 2 ( lobes) or hemispherical beams ..</p><p>..and more difficult to imagine with circular polarisation than H & V..</p><p>..but certainly there is something odd going on here ..</p><p>feel free to shoot me down in flames ..</p><p>..but at least a discussion however silly ..might just uncover the truth..</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 734162, member: 325666"] Hmmm.. This oddity relating to global beams and having to slightly shift the dish left or right to maximise the signal is bugging me .. I have a theory which is probably nonsense ..but here goes .. If a global beam isn't actualy comprised of one cental antena ...but in fact 2 ...beams from 2 antenae aimed to the left and right beams ie West and East fucused by reflectors at the satellite itself... ..then its possible ..I'm summising ..that there is an overlap in the central area .. If you place your dish/receiver under the beam of this overlap area ... and its reasonably accurate and set up correctly .. Is it possible the more acurate it is that 2 received beams carrying the same broadcast _could_ have a wave cancelling effect ...thus creating a null point ...aor at least greatly reduced point..?? My idea is that ..if you where to tilt your dish obliquely ..even slightly... at these 2 received beams ... Could you find a point the the left or to the right of centre ...where the 2 beams/waves amplified the signal due to wave addition as opposed to subtraction ..?? ie ..in phase as opposed to out of phase ..? As I said its just a theory ...and I do not know if a centralised global beam comprises 2 ( lobes) or hemispherical beams .. ..and more difficult to imagine with circular polarisation than H & V.. ..but certainly there is something odd going on here .. feel free to shoot me down in flames .. ..but at least a discussion however silly ..might just uncover the truth.. rgds VS [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
NSS5 = tried again but failed
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