Single Shield vs Dual Shield

[nz9p29]

Help!!!

I asked for Dual Shield Cable to be installed. They installed Single Shield!

I talked to Sattelite Installer and he said that they usually also use single and that cable is more concerned with having dual.

Should I INSIST on Dual Shield or let it go. I currently have Directv.

I am also being told that solid copper core will have more interference than copper clad. Is this a line of **? I thought it was the other way around.

Please help an idiot!:nono2:

[harsh]

I asked for Dual Shield Cable to be installed. They installed Single Shield!If you get down to the low level specifications, it often doesn't matter. Especially with digital content.I talked to Sattelite Installer and he said that they usually also use single and that cable is more concerned with having dual.This may be true because CATV is often quite concerned about signal leakage.Should I INSIST on Dual Shield or let it go.If it is working, I'd let it go.I am also being told that solid copper core will have more interference than copper clad. Is this a line of **? I thought it was the other way around.Sounds like something that our "friends" at Monster Cable would say. They may be right, but we have the overriding issue of needing to get some power out to the dish (and multiswitch in some cases).

A lot of this stuff is academic, so knowing what not to worry about is all you need to worry about. If it ain't broke, don't fix it.

[downrange]

You didn't mention your application but I wouldn't worry about it either - probably 90%+ of end users it makes no difference what's installed.

I run 2 lines of no-name hardware store rg6 underneath my apartment patio door and the coax is CRUSHED flat :) I couldn't care less, picture's fine (SD). Eventually I'll get around to splicing in flat coax but for now, doesn't matter...

[paulman182]

I am also being told that solid copper core will have more interference than copper clad. Is this a line of **? I thought it was the other way around. Please help an idiot!:nono2:

I'm pretty sure solid copper is specified by D* due to the possibility of voltage drop in a long run. So in this case, you got what D* says you should have.

If it is working fine, don't worry about it.

[carl6]

I can think of absolutely no reason that solid copper would be any more, or less, susceptible to interference than copper clad steel. The reason solid copper is specified is due to voltage loss between the receiver and the dish in longer runs, and/or through non-powered multiswitches, such as the WB68. One major reason installers would not want to use it is cost - it is more expensive.

As to single, dual or quad shielding, it won't matter in most cases unless you have very strong over the air signals at your location. For example, if you can turn your TV on, with no antenna at all connected, and get a snowy but recognizable (or better) picture, you probably need quad shield. If you get nothing but snow, you most likely don't need quad shield. I can easily watch two of my local stations with no antenna at all, and get a perfect picture on several stations with a staple straightened out and placed in the antenna connector (less than 0.5 inch sticking out). I have quad shield everyplace, even the jumpers from the wall plate to the TV, and still have ghosting problems with analog OTA or cable signals, which is the main reason I switched from cable to DirecTV.

Carl

[harsh]

I can think of absolutely no reason that solid copper would be any more, or less, susceptible to interference than copper clad steel.Think about "eddy current". Steel may have more or less desirable eddy current properties.

There may also be issues surrounding the use if dissimilar materials and the relative speed at which the signal travels in each (or not if there is some sort of skin effect). You might imagine what kind of phasing problems there could be (or not).

I honestly don't know, but I'm on board with the idea that copper is a better conductor than steel (and less brittle than the even better aluminum) which is important in reducing voltage drop.