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Satellite question
Satellite question
by jules1 » Mon Apr 17, 2017 5:03 pm
Does anybody know if I can split a single satellite feed to a twin tuner satellite receiver?
Having problems recording one channel whilst watching another and believe we need two feeds to enable us to do this.
Having problems recording one channel whilst watching another and believe we need two feeds to enable us to do this.
- jules1
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- Which part of Spain are you from?: Algorfa
Re: Satellite question
by disgraceUK » Mon Apr 17, 2017 5:25 pm
You do indeed need a twin LNB and 2x cables to be able to record 1x channel whilst watching another, here's a pro in the know member/Paul%20-%20TV%20Techie/
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disgraceUK - Posts: 98
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Re: Satellite question
by Paul - TV Techie » Wed Apr 19, 2017 7:02 pm
yup - you can't split a cable like you could with analogue - need an independent feed from the LNB - so two cable feeds, twin LNB etc.
Signal is on two polarities - Horizontal & Vertical. As you switch the first receiver on, it locks the specific polarity on the LNB - example one of the BBC1 frequencies which is on Vertical. If you just try to take a T junction in the cable, you then switch on the 2nd box (or 2nd tuner / twin tuner) and the channel you happen to want to watch is on a Horizontal frequency, which has been locked out by the first box....and there's your black / blank screen
So by not splitting the cable your box can switch from Horizontal to Vertical frequencies, between channels. You can do the other way - forced into it once or twice when seen ducts filled with concrete in by builders...But it's a pain, doesn't work well, you have to remember what channels are H / V - turn them off and on - same channel, doesn't always quite go to plan...Not the way to do the job.
Paul
http://www.televisiontechnology.eu
966783944
Signal is on two polarities - Horizontal & Vertical. As you switch the first receiver on, it locks the specific polarity on the LNB - example one of the BBC1 frequencies which is on Vertical. If you just try to take a T junction in the cable, you then switch on the 2nd box (or 2nd tuner / twin tuner) and the channel you happen to want to watch is on a Horizontal frequency, which has been locked out by the first box....and there's your black / blank screen
So by not splitting the cable your box can switch from Horizontal to Vertical frequencies, between channels. You can do the other way - forced into it once or twice when seen ducts filled with concrete in by builders...But it's a pain, doesn't work well, you have to remember what channels are H / V - turn them off and on - same channel, doesn't always quite go to plan...Not the way to do the job.
Paul
http://www.televisiontechnology.eu
966783944
- Paul - TV Techie
- Posts: 1125
- Joined: Sat Feb 22, 2014 9:21 pm
- Location: Technical Support
- Which part of Spain are you from?: almoradi, alicante
- Gender: Male
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