I have split the signal from my satellite dish and now nothing works.
Brian Butterworth published on UK Free TV It is not possible to split the signal from a satellite dish.
If you want more than one signal from the dish, you must connect a quad-LNB and feed a signal from it to each dish
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Thursday, 19 January 2012
G
gar dixon9:29 PM
can anyone help me i currently have sky+ 2 feeds from my dish but i also have a freesat tv which requires a feed is it possible to use multi switch at the tv end to split a feed from sky box or do i have to run extra feed from lmb messy as i have cables plastered into the walls
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J
jb3811:13 PM
gar dixon: If by split you are meaning a two way "switchable" split then that will of course work albeit that the Sky+ plus box will then have restrictions as far as recording is concerned, this because it requires two feeds to be able to view one programme whilst recording the other as two tuners are involved.
I would use the switch on the Sky boxes No2 input.
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Saturday, 4 February 2012
I
Inaki11:24 PM
Abingdon
can anyone guide me?
I currently have the installation of sky+ with 2 feeds from my dish (previous owner) but i just want to use a sd freesat receiver (1 feed only). Can i use one of the cables and forget about the other one without problems?
Thank you!
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Inaki's: mapI's Freeview map terrainI's terrain plot wavesI's frequency data I's Freeview Detailed Coverage
Sunday, 5 February 2012
G
Graham.F.Lewendon12:01 PM
re Stephen
Thursday 8 December 2011 6:56PM
Your problem is controlling the polarity of signal passed by LNB on dish (The LNB is a frequency changer and amplifier converting the 10.???? gigahertz signal sent by satellite down to 1 Gigahertz which is easier to send down the cable connecting dish to indoor unit (satellite set top box) but all satellites use polarisation either horizontal of vertical and some satellites also use circular polarisation and then it can be right or left-handed.) So the channels output from satellite alternate from one to the other polarisation setting be it vertical/horizontal or circular polarisation this is to help separate the signals and reduce cross or co channel interference. The polarisation setting is controlled by sending a short pulse up the single wire from indoor unit to LNB say around 28 VDC to select vertical or Around 23 for horizontal setting the same control system is implemented if the transmitting satellite uses circular polarisation.
Now if two indoor units are connected to the LNB output each indoor unit is trying to control polarity LNB is set to and it can only be set to one option. You need to understand that single output LNB's are really two units inside one body each one handling a single polarity and the pulse triggers a switching action from one to the other. To have two indoor units working from one dish with only one LNB attached you require a dual output LNB which will have two connections one for each indoor unit so one goe's to indoor unit in room number one and the other one goe's to indoor unit number two via two cables. Thus it follows that if you happen to have sky plus in one room and a dual freesatt tuner in another room a quadruple output LNB is required to send a signal independently controllable to each tuner via 4 cables! SMATV systems may do it with fewer cables but at greater cost. I have described the cheapest and simplest way I know. The quad OP LNB set up works for me with dual free satt and Sky plus tuners. Please work safely on ladders and isolate indoor units from mains before working outside on dish also if your not confident up a ladder seek help from a profesional C.A.I member. Remeember that the inner core conductor must not short to the outer foil or braid of the cable and or "F" connector body as if it did the indoor unit will be made inoperable at power up time. I can not help with damaged equipment since it is a speacilised repair function.
I have since 1990 installed various systems for own use and or relations including horizion to horizion 1 metre steerable dish systems during which I leant that the smallest dish movement can effect recieved signal qaulity so never steady your self up ladder by holding any part of dish mount
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Tuesday, 7 February 2012
D
Dave R7:56 PM
Hi Folks,
I have an old sky dish located on the wall outside my spare room which I use as an office... it was left there when we upgraded to skyplus.... I have a Samsung Tv with freeview built in which doubles as a laptop monitor in my office. Could I run a cable from the old dish to my tv and use it as a freeview arial... currently the freeview signal is worse than pants... I want to avoid installing a dedicated arial if I can get away with it.
If yes... what type of cable do I need and do I need any other parts to make it work?
Thanks
Dave
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Dave R: Please see Can I stop paying Sky and use my satellite receiver to get Freeview ? | ukfree.tv - independent free digital TV advice .
You need a run of satellite-grade coaxial cable and a Freesat box.
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Tuesday, 14 February 2012
M
Mark2:30 PM
Dear All,
I know that many comments here may have already covered this but I would like a specific answer please, all.
I live in a block of flats and have only 1 feed. I was told that an F splitter could be used so that i can feed both receivers on my Sky+ HD box. I have done this using a Konig purchased on amazon. I fitted it and turned off the single feed mode. I have approx 50% signal strength on each receiver and approx 80-90% quality.
It appears that i can record one channel while watching another but I can no longer see ITV 1, 2, 3 or 4.
What has happened? What could be the cause? The Sky adviser suggested over the phone that this was a dish problem....
Thanks in advance...
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J
jb384:56 PM
Mark: Doing what you have done creates the situation whereby any channel you record has to be on the same polarity (H or V) as the one you are watching, or of course vice-versa.
This is because that when you change channels on satellite equipment, whether it be Sky or Freesat you are constantly switching between signals coming in on either vertical or horizontal polarity, this achieved by the Sky or Freesat box sending a switching signal (two voltage levels) to the LNB instructing it to change, so obviously with only one lead coming into the box anything being recorded can only be done if its picked up on the same polarity as the one being viewed, or once again vice-versa!
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Friday, 17 February 2012
M
Mark2:20 PM
Hi jb38
I think you are right... I only have horizontal channels as E4, More4 and others are missing also.
I guess that there is no way round this other than an expensive stacker/destacker.
Is that correct?
Why is it that Sky+ boxes need more than one feed whereas Humax boxes (and maybe others) only need one feed and you can watch one channel and record TWO others...?
Must be a Sky thing...
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