[BC] Air-Dielectric Sections

[Mike McCarthy]

Agreed...and that's exactly who we had do the work.  A company which 
specializes in pulling cables/fiber long distances.  They had a variety of 
tuggers in their inventory from small to "Powered by Cat".  We used 
Greenlee tugger similar to those used by electricians and tower riggers 
mounted on a trailer hitch. It comes with a current meter which translates 
current draw to tension/pulling force. A necessary item when pulling cables 
of any type.  And also don't forget cable sheaves properly sized for the 
cables as well.  If you're pulling 1/2 cable, an 18' sheave is the smallest 
size you should use under light pulling conditions for a 90 deg. corner.

If you don't have such a tugger or similar to it, don't even try pulling 
the cable.  You might burn a trans up before the end of the job if you 
simply tie off to your trailer hitch.

MM

At 11:29 AM 3/9/2007 -0900, Chuck Lakaytis wrote
>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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>>The BROADCAST [BC] list is sponsored by SystemsStore On-Line Sales
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>
>
>_______________________________________________
>
>The BROADCAST [BC] list is sponsored by SystemsStore On-Line Sales
>Cable-Connectors-Blocks-Racks-Wire Management-Test Gear-Tools and More! 
>www.SystemsStore.com       Tel: 407-656-3719    Sales at SystemsStore.com
>