Hi i need to buy a satellite cable for a 30m to 35m run. Not sure if i will have a single cable or twin cable. I have read about WF100 cable but i have seen so many types of cable for sale. Can anyone help please.
for performance, there's no difference so long as the cable is the same in either configuration
time to install: longer for two singles; it's just more hassle
cost to install: higher; you're going to use a hell of a lot more cable clips (^cost) and it's going to take a heck of a lot more time to bang them all in to try to keep the two cables together. It'll never look as tidy as a single run of twin, and you'll have a lot more holes in your pointing
Cheaper RG6 (CCS copper coated steel with aluminium braid) as single or twin
even with the more reputable brands you'll still have considerably more DC resistance than with pure copper, which means the voltage from your box to power and switch the LNB is going to have a harder time reaching its destination. The signal coming back from the LNB is also subject to higher losses because the CCS cables have higher attenuation
is there a trustworthy spec / Is there even a spec? There's a lot of cheap rubbish on the market which has worse specs than the reputable CCS. Beware
Shorter lifetime - encounter reliability problems earlier - replace sooner: Aluminium oxidises in the presence of air and moisture. Aluminium with power running through it oxidises even faster. If you happen to knick the cable sheath as you're banging in those clips then moisture will get in along with air. I have seen new cables die inside 18 months. How much would it cost you to redo the work?
Copper twin (WF100 twin or some other CAI approved all-copper cable
likely to have a trustworthy spec with lower DC resistance and less attenuation
outer jacket made of better grade PVC - more resistant to knocks - lower risk of water ingress