[BC] Air-Dielectric Sections

[Chuck Lakaytis]

What you will really need is the services of an electrical contractor that 
has the necessary equipment.  This will include a "pulling indicator" to 
make sure that the maximum allowable pulling force is not exceeded.


Chuck Lakaytis
Director of Engineering
Alaska Public Broadcasting, Inc.
135 Cordova Street
Anchorage, AK 99501
907 277 6300
907 277 6359 FAX
907 301 4339 Cell
----- Original Message ----- 
From: "Robert Meuser" <Robertm at broadcast.net>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Friday, March 09, 2007 11:12 AM
Subject: Re: [BC] Air-Dielectric Sections


>
> 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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