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Topic # 25421 20-Aug-2008 23:38
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Hi There

I see that RG6 and RG59 are mentioned when talking about coax?  Is this right?

I am wanting to cable up my new house and want to know what I should use.  I have a splitter that takes f-connectors.

What is better?  Differences? 

Cheers

Louian

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  Reply # 158539 21-Aug-2008 08:47
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Do not use RG59 unless for video feeds (composite or component). All RF cables for UHF or Satellite must be (that is an assertive MUST) RG6.

If your new home is in a TCL cable area (Kapiti/Wellington/parts of ChCh) I advise you use quad shield. If you are cabling for UHF DTT or Sky/FreeView satellite I recommend you use duobond (dual shield), I normally use Belden or Times cable both should be marked Sky Satellite rated 3GHz or FreeView rated 3GHz.

Both Quad shield and Duobond RG6 have the same frequency/loss performance, just greater sheilding on the Quad shield. There is lots of discussion regarding the use of Quad shield for for DVB-T/DTT. As we only use the UHF band for DTT in NZ the need to use quad shield is less important compared to countrys that use the VHF band as well which has more man made noise issues. Most of the DTT installs I have done use duobond, I have had no issues with impulse noise causing problems. That said in installations where the signal is at the low end I use Quad shield.

All RG6 cables should be termintated with F connectors, I use linear compression connectors, however Radial crimps are also fine. Hex crimps are also good, not as good as the other two, but the tool cost for hex is less, if correctly cable preparation and connecctor installation technique is used all are good.

RG59 has greater losses in the upper UHF band and LBand (Sat) that renders it useless for those uses.

Cyril



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  Reply # 158553 21-Aug-2008 09:14
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Excellent - thanks Cyril7

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  Reply # 158810 21-Aug-2008 21:21
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Whichever you get, use a proper way to get it off the roll, have someone help you and do not ever try to get a twist out of it by pulling on it, the steel core will kink and can push thru the dilectric to the shield for a short, or just get close to it and screw up the signal.

Its much less forgiving then cat-5 is, since you can massage issues out of cat-5 whereas the solid core will never become undamaged.




Richard rich.ms

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