Determing the quality of co-axial cable (1 Viewer)

al_madhi

Thread Starter
SatelliteGuys Family
Feb 6, 2005
81
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Riyadh - Saudi Arabia
Hi , guys wondering if anybody can tell how to determine the quality of a co-axial cable before you buy it . There are a lot of brands manufacutured in many countries , What to look for in determing the quality of the co-axial cable , It is only a cable which consists of four things :-

1 - the Black rubber casing

2 - the braided wire

3 - the foam dielectric

4 - the copper conductor

In the above four things what they should be for the best quality co-axial cable

Please advice .


Best Regards
 

sjm992

Member
Dec 3, 2003
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Newark, CA
I made the mistake of buying one from Home Depot that had a copper plated steel conductor instead of solid copper and it didn't have a foam dialectric - just extruded plastic. I wouldn't have known if I hadn't cut it.
 

chadzx11

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Jan 28, 2006
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memphis
sjm992 said:
I made the mistake of buying one from Home Depot that had a copper plated steel conductor instead of solid copper and it didn't have a foam dialectric - just extruded plastic. I wouldn't have known if I hadn't cut it.

Most of it is copper plated steel. Doesn't HD sell vextra? That's a good brand, IMO.
 

Claude Greiner

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Supporting Founder
Sep 8, 2003
13,225
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From what I have seen, there is basically 4 grades of coaxial cable....

#1 Cheap Chineese RG6
#2 Good Chineese RG6
#3 American Made RG6 (Comscope, Vextra, Belden)
#4 Premimum American Made RG6 Quad Shield (Comscope, Vextra, Belden)

Usually everything I see is good enough quality RG6 Cable for Satellite. If your doing a perminent installation, I would recommend using 2,3 and 4.

As far as determining the cheap Chineese stuff, you can usually feel it. It usually has a funney smell, its a bit greesy and you can generally feel the difference when compaired to some good coax.
 

Claude Greiner

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Sep 8, 2003
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100% copper and copper plated steel does not make a difference.

Its nice to have 100% Copper since will pass the signal better, but your not going to see any significant improvement in performance unless your using very long runs!

Consider this, if you have ever had your system professionally installed they are using an inexpensive RG6 Cable.

When I was younger I used to spend the extra $40 per 1000 foot roll and get the better quality RG6 cable, but now a days we just get the good chinnese stuff or Vextra. There are 3 reasons....

#1 The average customer does not appreciate it, nor will they spend the extra money to pay for it.

#2 There is no noticable difference in signal quality

#3 Reduced commissions from DISH and Directv mean we have to make up for it somewhere!
 

sksatellite

SatelliteGuys Pro
Sep 7, 2003
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You right, Cloude, with the pay get less and demanding more from DTV and Dish, someone has to pay for it or the installers has to cut some corner to make even, or let the $11.00 hourly young kids with no experience do the installation and get ton of complain from customers.
 

Foxbat

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Nov 25, 2003
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Claude Greiner said:
100% copper and copper plated steel does not make a difference.

Its nice to have 100% Copper since will pass the signal better, but your not going to see any significant improvement in performance unless your using very long runs!
Claude, as it was explained to me, 100% copper is better for longer DC-powered feeds since the DC resistance is lower than the copper-clad steel core. Otherwise, the cheaper cable works because of the "skin effect" at the frequencies involved. Another issue would be a long run of suspended cable where the steel core holds up better than the 100% copper core.
 

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