[BC] Air-Dielectric Sections

[Mike McCarthy]

The stuff from Ideal, et. al for electricians is junk. Water based and 
easily washes off the jacket and out of the conduit/duct.  Also, once it 
dries, the cables are in a cake of sorts and a real pain to try and pull 
back out. So in the end, if the duct floods, the end result is the cable is 
there to stay...

The stuff the fiber guys use is something silicone based and doesn't dry or 
wash off the cable/duct wall.  Its stays slick and adheres to the cable 
jacket and duct wall like glue...but is slicker than snot on a door knob 
for years to come.  It's also water resistant. So if the duct floods, the 
cable can still be pulled back out.  Neat stuff....but a real pain to get 
off your hands since it's not easily washed off.

MM

At 06:43 PM 3/9/2007 +0000, Rob Atkinson wrote
>electricians use this lube stuff on wire to make pulling it easier--has 
>anything like this ever been tried on feedline getting pulled through 
>conduit?  Of course you'd have to insure that the lubricant doesn't harm 
>the feed jacket and you'd need a lot of it.
>
>rob atkinson
>
>
>From: "Gary Glaenzer" <gglaenzer at hqradio.com>
>Reply-To: Broadcasters' Mailing List <broadcast at radiolists.net>
>To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
>Subject: Re: [BC] Air-Dielectric Sections
>Date: Fri, 9 Mar 2007 08:14:59 -0600
>
>Andrew;
>
>If it's a non-DA, there will be no 'phasor' as such, just an ATU at the
>antenna end.
>
>So 'velocity factor'  would not be a problem; even if it was different from
>3" to 4", which I'm not sure it would be.
>
>I'd bury it deeper than 3', unless you are in the South, and pulling 3"
>Heliax thru 6" conduit over 750 feet will be a cast-iron SOB.
>
>The advice on fiber duct has been educational, and I'd look into it if I
>were you.
>
>Gary
>
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