|
||||||||
Quad L.N.B |
![]() |
|
|
Thread Tools | Search this Thread |
|
|
#1 |
|
Forum Member
Join Date: Apr 2009
Posts: 3
|
Quad L.N.B
I have just replaced a single L.N.B with a quad L.N.B on my Freesat dish, the old L.N.B was circular the new one is oval,
this was to take advantage of the twin inputs on a new Humax P.V.R Does it matter which way the L.N.B faces the dish, ie at the moment the oval is upright. The picture quality is as good as before as well as signal strengh, any advice would be appreciated. Thanks Chris |
|
|
|
|
Please sign in or register to remove this advertisement.
|
|
|
#2 |
|
Forum Member
Join Date: Mar 2009
Posts: 253
|
Quote:
I have just replaced a single L.N.B with a quad L.N.B on my Freesat dish, the old L.N.B was circular the new one is oval,
this was to take advantage of the twin inputs on a new Humax P.V.R Does it matter which way the L.N.B faces the dish, ie at the moment the oval is upright. The picture quality is as good as before as well as signal strengh, any advice would be appreciated. Thanks Chris |
|
|
|
|
|
#3 |
|
Forum Member
Join Date: Apr 2009
Posts: 3
|
Quad L.N.B
Sorry perhaps I did not explain myself properly, the L.N.B is facing the centre of the dish as before, I was wondering whether the oval l.n.b should be vertical as it was supplied or horizontal.
chris higgin |
|
|
|
|
|
#4 |
|
Forum Member
Join Date: Dec 2002
Location: East Angular
Posts: 586
|
Quote:
The picture quality is as good as before as well as signal strengh, any advice would be appreciated.
|
|
|
|
|
|
#5 |
|
Forum Member
Join Date: Dec 2002
Location: Bucks
Posts: 378
|
For Astra satellites as I understand it for southern England the LNB is usually specified as being skewed at -13.2 degrees (eg see the www.dishpointer.com site "LNB Skew" ).
ie When looking from the back of the dish rotate -13.2 degrees from its default straight down position. Mirror image: when looking from the front/dish side: the lnb should be slightly clockwise, ie if it was the HOUR arm on your watch, it should be angled at 6:30 position rather than position straight down at 6:00 - which could/should give you a better Strength/Quality. From my little informed position as I understand it the signals from the satellite are sent in both HORIZONTAL and VERTICAL polarised - ie your dish is receiving overall signals in a "+" pattern, but because the satellite isn't 100% square on to the dish, that cross tends to twist round a bit towards "x" and hence rather than perfectly vertical "+" the LNB twisted round those 13 degrees towards "x" means it better in-line with those offset/twisted horizontal/verticals. MKD |
|
|
|
|
|
#6 |
|
Forum Member
Join Date: Apr 2009
Posts: 3
|
Quad L.N.B
Thanks for the replies I think I will leave well alone.
Chris |
|
|
|
|
|
#7 |
|
Forum Member
Join Date: Sep 2007
Location: Plugged In
Posts: 17
|
Quote:
I have just replaced a single L.N.B with a quad L.N.B on my Freesat dish, the old L.N.B was circular the new one is oval, . . .
Thanks Chris |
|
|
|
![]() |
|
All times are GMT. The time now is 07:37.

