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Running Satellite Cable Alongside Power Cable


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Posted

Guys

I have just run a new power cable, twin and earth, it will just be used for the TV, UBC decoder, DVD player so no more than about 400watts (at 200V). I would like, it's easier, to run the satellite cable (it says commscope 5730 Cable Satellite 3GH) next to it ie almost touching over a length of about 6M. Will this give me a problem? I do have an alternate route for the cable but it's is more difficult. I know that the UBC signal is poor but don't want to make it any worse.

Thanks

Posted

Who ever sold you that particular Commscope cable did not do you any favors.

http://docs.commscope.com/Public/5730-BW.pdf

http://en.wikipedia.org/wiki/Coaxial_cable

That cable is a steel center conductor cable, which is not the best for video cable inside your home. It would be suitable for a low cost CATV system. That cable model does not even have a copper screen or braid. There are plenty of quality COPPER CENTER conductor RG6 cables easily purchased in Thailand for less money than many dealers charge for Commscope low grade cable. Belden and Pan Asia cable are widely available in Thailand.

A quick google search will show you many examples where you do NOT want to run RG6 or other video cables near to electric wire. You do not want to run telephone or internet wire close to electric wire in your home supply and wiring.

Below is common advise from a Home Theater forum:

Use quad shield in areas where there is a potential for stray RF noises to get into the video signal. Fluorescent light ballasts come to mind, as do AC power lines and network cables. The best way to prevent noise is to run the TV cables separately from other wires. Stay away from ballasts and dimmers, and cross AC and network cables at right angles. Never run parallel to or bundled with other wires.

Better to do things RIGHT, even if DIFFICULT as you will have better results long after you forget that it was "difficult".

Perhaps someday you will have a TV dish and service which will provide much better picture quality, a wider selection of programing, and lower total cost than UBC/True which looks like a bad VCD. Even worse if you have a larger screen TV.

Posted
Who ever sold you that particular Commscope cable did not do you any favors.

http://docs.commscope.com/Public/5730-BW.pdf

http://en.wikipedia.org/wiki/Coaxial_cable

That cable is a steel center conductor cable, which is not the best for video cable inside your home. It would be suitable for a low cost CATV system. That cable model does not even have a copper screen or braid. There are plenty of quality COPPER CENTER conductor RG6 cables easily purchased in Thailand for less money than many dealers charge for Commscope low grade cable. Belden and Pan Asia cable are widely available in Thailand.

A quick google search will show you many examples where you do NOT want to run RG6 or other video cables near to electric wire. You do not want to run telephone or internet wire close to electric wire in your home supply and wiring.

Below is common advise from a Home Theater forum:

Use quad shield in areas where there is a potential for stray RF noises to get into the video signal. Fluorescent light ballasts come to mind, as do AC power lines and network cables. The best way to prevent noise is to run the TV cables separately from other wires. Stay away from ballasts and dimmers, and cross AC and network cables at right angles. Never run parallel to or bundled with other wires.

Better to do things RIGHT, even if DIFFICULT as you will have better results long after you forget that it was "difficult".

Perhaps someday you will have a TV dish and service which will provide much better picture quality, a wider selection of programing, and lower total cost than UBC/True which looks like a bad VCD. Even worse if you have a larger screen TV.

Thank you

Actually the house came wired with ''High Quality CoaxialCable USA Standard 2003DB'' whatever that means. From the loft it ran down to a junction box and then from there ran to each of four rooms. So previously UBC just connected their dish up to the coaxial cable in the loft. They then picked up (joined) at the room outlet with Commscope cable to the decoder. I ditched UBC a few months ago, but with their 'cheap' offer on at present I decided to return.

So I would be best getting them to run one cable from their dish direct to the UBC box I guess. I guess though that I have to accept whatever cable they supply, but could I suppose replace it at a later date.

I don't want any cables visable running along walls either inside or outside the house. I can hide them but it is a longer route.

Posted

Get UBC to run a new cable. Their co-ax is not much better than comscope but will do.

It should not be a problem if it runs next to power for only 6 metres.

Longer lengths to be avoided.

Then when the new cable has been installed, UBC can check reception with you.

Posted

Everytime you interfere, it gives UBC wriggleroom, if the signal is lousy - Farang's Fault (FF)

It does sound unbelievable they would purposefully degrade their signal?!

Let them sort it out - dont sign-off on the job until you are satisfied.

You might even suggest alternatives - so long as there is something in it for them.

I once had a GTE lady rewire my entire house - underfloor - for communications everything. Magnificent.

Bubba

Posted

One other thing to remember...the "signal" cable (coax) should have the same voltage insulation level as the power cable. In Thailand, this is 300 volts. If the signal cable cannot insulate against 300 volts, the signal cable should be run in a separate duct/conduit.

What would happen if you had a power cable fault & this fault broke through the insulation of the signal cable? Answer: an expensive disaster. For this reason, many other countries have mandatory laws, which require cables of different uses & voltages, to be seperate from differing cables.

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