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    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Audio cable shielding - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues - primarily having to spend time purging garbage posts from the board. At some point I might start the RF Cafe Forums again if the phpBB software gets better at filtering spam. Note: The RF Cafe Forums were reconstituted in April 2021!

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 Post subject: Audio cable shielding
Posted: Mon Nov 07, 2005 10:17 am 

Joined: Thu Sep 29, 2005 4:56 am
Posts: 2
Location: North West UK
Hi everyone, quick question from a total novice....
I don't want to replace a 'lot' of expensive audio cable to shield it. Can I just run it through copper pipe to shield it from RF and other interference?
Thanks in advance

Kirt Blattenberger
 Post subject:
Posted: Tue Nov 08, 2005 11:46 pm 
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Joined: Sun Aug 03, 2003 2:02 pm
Posts: 451
Location: Erie, PA
Greetings Lostcause:

Running your cable through copper pipe and grounding one end will shield everything inside from outside interference. However, if cables that were not closely bundled end up being so when moved into the pipe, you could end up with cross-talk interference that either did not exist or was unnoticeable before.

...just a caveat

- Kirt Blattenberger :smt024
RF Cafe Progenitor & Webmaster

 Post subject:
Posted: Wed Nov 09, 2005 5:42 am 

Joined: Thu Sep 29, 2005 4:56 am
Posts: 2
Location: North West UK
Thanks Kirt, good to know someone out there is listening.
I'll make sure the cable is pulled taught & I'll route each channel seperately...I've a shed load of pipe thats going to waste anyway!
Thanks again

 Post subject:
Posted: Thu Nov 24, 2005 3:34 am 

Joined: Thu Nov 24, 2005 2:40 am
Posts: 4
Howdy Lostcause!

If you haven't already routed the cables through the pipe... something I have had a lot of love with it using earthing braid. You get it at most harware stores (here anyway) and it's pretty cheap. You just open up the braid aand it becomes a hollow tube that you can thread the cable through. it works like a ninja for RF and it has the advantage of being flexible. If you feel like a lot of effort, you can also strip the braded part off of old coax (RG223 double braid works well because you get two different sizes.) which is much thinner than the braid o your can stuff a few shileded cables down one braid.

Hope that helps! :)

 Post subject:
Posted: Thu Nov 24, 2005 3:06 pm 
Like that idea, I have a ton of braid and never even thought of it as hollow......Cool!

Posted  11/12/2012
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