[BC] Re: Open Line was (franklin question)

[Ron Cole]

Hi,

I have seen two open wire sites and worked on one, both were in San Antonio
5Kw DAs.

KONO 820 - 2 Tower DA was 5 Wire System 4 Outer and 1 Inner.
A 5 kw Collins feed via coax a matching section that fed the open line,  the
line ran from TX building to the 1st Tower then on to the second tower.  To
tune the DA you made adjustmnets at the tower base.   The Array was very
stable reliable.   The site was moved several years ago.  An all new Coax
system is being used at the new site.

KTSA 570, still uses or used what looked like a ladder line system.
Looks like a small Power line running from tower to tower. I dont know much
more about that system.


Ron Cole

On 9/29/06, Rob Atkinson <ranchorobbo at hotmail.com> wrote:
>
> Peter thanks for the information on the franklin especially how they are
> fed--
> for the interested, here is a link to scott fybush's website where he has
> photos of the KFBK site...
>
> http://www.fybush.com/sites/2005/site-051028.html
>
> rob atkinson
>
>
> From: PeterH5322 <peterh5322 at rattlebrain.com>
> Reply-To: Broadcasters' Mailing List <broadcast at radiolists.net>
> To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
> Subject: Re: [BC] franklin question
> Date: Fri, 29 Sep 2006 12:28:11 -0700
>
>
> >I'm curious, what size conductor(s) are used for the open
> >wire line?
>
> It's a conventional open line, traditional for those times, where RCA
> would install "five wire" for 10 kW and under, and "six wire" for over 10
> kW, except this has six exterior wires and two interior wires, making it
> "eight wire".
>
> The result is the same: simulation of a coax, using hard-drawn copper
> interior conductors, and the same in a geometric pattern as exterior
> conductors.
>
> If I had to guess, it would be 8 AWG.
>
>
> >How far away from the tower is the open wire line?
>
> Three feet, as an estimate.
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