Jump to content

Welcome to DBSTalk

Sign In 

Create Account
Welcome to DBSTalk. Our community covers all aspects of video delivery solutions including: Direct Broadcast Satellite (DBS), Cable Television, and Internet Protocol Television (IPTV). We also have forums to discuss popular television programs, home theater equipment, and internet streaming service providers. Members of our community include experts who can help you solve technical problems, industry professionals, company representatives, and novices who are here to learn.

Like most online communities you must register to view or post in our community. Sign-up is a free and simple process that requires minimal information. Be a part of our community by signing in or creating an account. The Digital Bit Stream starts here!
  • Reply to existing topics or start a discussion of your own
  • Subscribe to topics and forums and get email updates
  • Send private personal messages (PM) to other forum members
  • Customize your profile page and make new friends
Guest Message by DevFuse

- - - - -

Want to pre-wire for new installation, how many lines from dish?

  • Please log in to reply
26 replies to this topic

#26 OFFLINE   peds48



  • DBSTalk Club
  • 17,988 posts
  • LocationNY
Joined: Jan 10, 2008

Posted 08 February 2014 - 01:57 PM

RF tends to travel on the surface of a conductor, this is known as skin effect.  DC current flows through the conductor, which is why solid copper core is specified for runs that carry DC power (like from the PI to the LNB). Copper clad steel does have greater resistance to DC current flow than does solid copper of the same size/gauge.  Resistance to RF is a consideration in some situations, but typically not in the normal DirecTV installation.

and that was my point.

Here’s to the crazy ones.
The misfits. The rebels.
The the troublemakers.
The round pegs in the square holes.

The ones who see things different.
They’re not fond of rules, and they have no respect for the status quo.

Think Differently 

...Ads Help To Support This Site...

#27 OFFLINE   carl6


    Hall Of Fame

  • Moderator
  • 12,379 posts
  • LocationSeattle, WA
Joined: Nov 15, 2005

Posted 08 February 2014 - 11:30 PM

If you look at most hardline (heliax as opposed to coax), the center conductor is usually hollow. It's a copper tube as opposed to a solid copper or copper clad steel conductor.  Advantages are lower cost and less weight, and for rf and the skin effect, it doesn't impact performance at all.  Those installations rarely carry DC power though, just rf.

Protected By... spam firewall...And...