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what is the difference between normal Co-axial cable and satellite grade? Can I

what is the difference between normal Co-axial cable and satellite grade? Can I use normal cable for either freeview or satellite signal?

what is the difference between normal Co-axial cable and  satel
published on UK Free TV

The satellite cable is higher grade (ie, thicker), but the impedance of both is 75 ohms, so you can use satellite cable for Freeview, but not the other way round.

See also All about aerials



All questions
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In this section
Can I use an existing sky dish with a freeview box? and if so can the two servic1
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I currently have an NTL cable line for TV. Will I be able to use this to receive3
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Can any digiboxes separate out the standard 5 terrestrial channels onto an analo5
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Comments
Sunday, 6 January 2013
G
George Hindley
2:34 PM

I currently have a satellite cable feed to a freesat receiver. Is it possible to also send a Freeview signal down the same cable and split the signal for a freesat and a freeview receiver?

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George Hindley's 3 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

3:26 PM

George Hindley: Yes, but this requires the use of two DIP2 Satellite / aerial combiners, the second one operating in reverse.

Have a look at the link as this company can supply all thats required for the job.

Skylink amplified splitters, Loft Boxes

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jb38's 7,179 posts GB
Tuesday, 23 April 2013
R
Richard Pope
12:03 PM

I keep getting the message no signal with my Bush Digi Box this happens aftyer the picture has been ok for a little while then the picture breaks up and no signal messgae appears. Could the poroblem be caused by the fact I am using a mixture oif satellite and normal cable from the dish with one connector for the cable

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Richard Pope's 1 post GB
M
MikeB
sentiment_very_satisfiedPlatinum

4:54 PM
Peterborough

Richard Pope: Richard - Could you explain what you mean by 'a mixture of satellite and normal cable from the dish with one connector for the cable' - Your digibox should be a Freeview box (I assume) and therefore connected to an aerial, and any satellite feed should come via a dish. If possible they should be entirely seperate, and normally connect via scarts/hdmi's into your TV (unless you have internal tuners for both).

As far as the freeview signal is concerned, if you supply a postcode and other details, them I'm sure someone more knowledgeable than me should be able to help.

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MikeB's 2,574 posts GB
Monday, 13 January 2014
M
Muldoone
10:32 AM

Can I use my Sky box as a Freesat box? I have just bought a new telly with in built freeview but don't have an aerial. I currently have Sky+ but have been thinking of getting rid of it. If I get rid of Sky and get a freesat recorder box for downstairs can I use my Sky box upstairs and connect it into the satellite dish? Can I use ordinary aerial cable or do I need to use satellite cable? Do you get more channels on Freeview or Freesat? Sorry for all the questions but I can't decide which route to go down.

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Muldoone's 1 post GB
Wednesday, 8 April 2015
S
sj
8:19 AM

can i use tv aerial cable for sky i have connected both sky cables to normal coax cable too extend them . i have got a good picture but only 1 signal strengh when there should be 2 ??

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sj's 1 post GB
J
jb38
sentiment_very_satisfiedPlatinum

9:22 AM

sj: Check the connectors used at both ends of the cable used to extend the Sky cable, that is on the one with no signal, as what you have reported suggests that there is a short circuit on it, this usually caused by a single strand of the braiding having wrapped itself around the middle core of the cable.

Of course before you carry out the aforementioned trying swapping the boxes two inputs over, because if the problem is being caused by a short circuit, then the no signal will also swap positions.

The other point being, and although you havent mentioned it as such, but if your Sky+ box was set up for a single input mode? then the signal strength check screen does not indicate two inputs.

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jb38's 7,179 posts GB
Sunday, 1 May 2016
N
nicholas
sentiment_satisfiedSilver

2:11 AM

Hi,the satellite grade coax due to its construction weakens the signal less than the standard stuff,its
like towing a small caravan/large caravan,the more weight,less mpg.When a radio signal enters a cable
the resistance of the metal construction weakens the signal.

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nicholas's 124 posts GB
MikeP
sentiment_very_satisfiedPlatinum

12:48 PM

nicholas:

The resistance of a coaxial cable is irrelevant at higher frequencies. It is the impedance at the frequency in use that matters and that is unrelated to the cable resistance. A satellite IF signal at around 1700 MHz will be born along the cable inner core by the few molecules at the surface of the inner conductor, the well known skin effect.

Cable intended for satellite IF use does present lower loss and is good for use with both UHF (Freeview) and Satellite IF (Sky and Freesat, etc) signals. When used for UHF the losses are generally less than with 'conventional' UHF cable.

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MikeP's 2,837 posts GB
MikeP
sentiment_very_satisfiedPlatinum

12:53 PM

SJ:

It is unwise to mix cable types for satellite downleads. The UHF coax is poor at the frequencies used for the connection between the LNB and the satellite receiver inputs. The change in presented impedance at the cable junction can give rise to unexpected effects, such as some signals not being receivable but others seeming OK.

I would recommend changing the UHF (conventional TV) cables for satellite flyleads using 'F' connectors fitted carefully to avoid short circuits. You can use 'F' to 'F' couplers to join cables together but try to use only one maximum in each lead.

The problem you report could well be because of the use of TV cable and not satellite cable.


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MikeP's 2,837 posts GB
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