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# 214941 4-Jun-2017 10:31
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I'm using an outdoor antenna placed next to window and a normal cable to connect to TV. Everytime I turn on my hifi and computer, the freeview signal will get weaker and weaker. I know removing hifi and computer will be ideal but just wondering if a high quality coxial cable will resolve this interference problem? Say Canare RG6? Seems to be BNC only which means adaptors will be involved. Thoughts?

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Ultimate Geek


  # 1794451 4-Jun-2017 10:37
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 "Everytime I turn on my hifi and computer, the freeview signal will get weaker and weaker."

 

Are these connected to your TV aerial coax?


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  # 1794453 4-Jun-2017 11:03
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BNCs are 50 ohm and typically not used with RG-6 (75 ohm impedance). TVs themselves have Belling Lee sockets. F type can also be used with appropriate Belling Lee adapters. Termination at antenna end would be either saddle clamp or F type.

 

Call an antenna installer (and install antenna at height).

 

High quality coax isn't going to improve things unless cable run is long.





Ross

 

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Ultimate Geek


  # 1794498 4-Jun-2017 11:29
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High quality coax isn't going to improve things unless cable run is long.



That's generally true in terms of reducing loss, but some cheaper cables will have only a single screen. This allow strong interfering signals to cause problems.

Decent cable with correct connectors properly terminated is what you want.
BTW there are 75 ohm BNCs . As mentioned earlier make sure all your cables and connectors are the 75 ohm type

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Ultimate Geek


  # 1794500 4-Jun-2017 11:31
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To sum up my post, check the screen of your cable. Cables with single are less desirable.

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  # 1794513 4-Jun-2017 12:07
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The Canare cables are terminated with BNCs as obviously designed for HD-SDI. I would be questioning whether you current cables are correctly terminated, using screw on connectors maybe??





Ross

 

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  # 1794546 4-Jun-2017 14:17
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I used this trademe seller for made up cables, 4-way splitter, and adaptors when I redid our aerial installation. Works like a dream with no problems on both TV's and PVR.

 

http://www.trademe.co.nz/electronics-photography/tvs/cables-aerials/auction-1333836035.htm


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  # 1794555 4-Jun-2017 14:49
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Quality of HDMI cables near the antenna cables also matters. I have some cheapies that will trash my freeview reception even about 1m away from the antenna, and when the coax is close to them will also kill it. That was even when I had an outdoor antenna coming into the place.

 

I'm wondering if the cheap HDMI cables might be part of the reason I have so much grief with wireless controllers too.





Richard rich.ms

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