Preferred coax cable?

[DIYspanner]

Would just like to know what the preferred coax cable for the likes of signal for Sky+ HD reception from a satellite TV dish please.

Any opinions?

 

[Harry Bloomfield]

Would just like to know what the preferred coax cable for the likes of signal for Sky+ HD reception from a satellite TV dish please.

Any opinions?

CT100 or equivalent.

 

[opps]

As above, but although called CT100, it isn't strictly CT100.

You will also need F-type connections (either screw on or crimped)

 

[Harry Bloomfield]

As above, but although called CT100, it isn't strictly CT100.

You will also need F-type connections (either screw on or crimped)

You can fit the normal Belling-Lee plugs, to CT100.

 

[opps]

You can fit the normal Belling-Lee plugs, to CT100.

Fair play, but do Sky boxes use those?

 

[Sureitsoff?]

sat connections are f plug
aerial are belling lee male and female
but i would use f connectors for all and use adaptors to convert to belling lee as needed

 

[Lucid]

Webro WF100 if you just need a single run. There's a shotgun version where two coax a joined in parallel for recorder boxes. These are RG6 sized cables, so about a 6.5~6.7mm diameter.

For something that takes up less space, have a look at WF65. This is generally sold as a shotgun mini coax. Each cable has an outer diameter of 4.6mm

All the above are 100% copper cables with a foam dielectric. You really can't go wrong with these.

I think CT100 used to be an air-spaced coax. Thar is to say that instead of foam it used an open cell dielectric insulator to maintain the 75 Ohm impedance relationship between the core conductor size and the braid shielding. Air is a good insulator.

Back when CT100 was the go-to coax, foam dielectric wasn't as advanced as today. It would hold moisture, and that's not good for the signal or any gear connected to it. If airspace had a weakness, it was its habit of kicking if bent too much. This changed the spacing between the core and shielding, and could result in a notch filter effect potentially knocking out a narrow frequency band. Bad news if your channel happened to be in that band.

Modern namesake products us foam dielectric, and they could also use lesser grade materials for the core and the shielding.

 

[Harry Bloomfield]

Fair play, but do Sky boxes use those?

Yes, though versions of, and I think there is a later designation number for that coax..

 

[Sureitsoff?]

Fair play, but do Sky boxes use those?

Sky boxes use belling Lee for the aerial in/out and f conns for the dish feeds