[BC] Air-Dielectric Sections

[Robert Meuser]

Grease might help but remember the cable weighs 2.5 pounds per foot 
without taking into account the reel. A 750 foot run would weigh 1875 
pounds without the reel. So you are looking at something that can handle 
a ton. The last time I laid a big line, We had a Cat to lift the reel 
and then roll back as a number of people along the way guided the cable 
into place. When you work with large line, you really need to consider 
the mechanics of the think about how you are actually going to install 
it or hire some one who does it all the time.

R


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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