base insulator

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TPT
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base insulator

Post by TPT »

Looks like we are buying an Am station. And will have to move the tower. Class C/kilowatt. Plan on using Rohn 55G (I have 50' of almost new sections), found a source for the tapered bottom section--but now looking for a base insulator.

The Rohn base section is designed to mate with an Austin A-4197-L I've e-mailed Austin, but no response. Do they use distributors? Possible sources?

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Deep Thought
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Re: base insulator

Post by Deep Thought »

You might have better luck calling them.

Doesn't Rohn have a source?
Mark Mueller • Mueller Broadcast Design • La Grange, IL • http://www.muellerbroadcastdesign.com

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kkiddkkidd
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Re: base insulator

Post by kkiddkkidd »

I have an insulator that came out from under a 180ft Rohn 25 tower but not sure if I have the base cup to match.

Whatever you do, don't set a normal flat base plate on top of an insulator...
--
Kevin C. Kidd CSRE/AMD
WD4RAT
AM Ground Systems Company
http://www.amgroundsystems.com
KK Broadcast Engineering
http://www.kkbc.com

TPT
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Joined: Mon Dec 03, 2007 3:18 pm
Location: St. Marys, WV

Re: base insulator

Post by TPT »

Heard back from Austin--reasonable price. Got to wait until the end of the month--church selling their AM & can't have full congregation meeting until that last Sunday.

The Rohn tapered base section --listed as a 55TG1A--is supposedly designed for this insulator.

Will be an interesting project, last AM construction project was back in 1984. Started out with a 150' tower for 1570, then got it moved down to 630 two years later with a 230' tower. Had to measure several radials out 100 miles to establish what was obvious--conductivity is lousy in SE Ohio.

COMMENG
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Re: base insulator

Post by COMMENG »

TPT wrote:
Wed Jun 17, 2020 5:41 am
Heard back from Austin--reasonable price. Got to wait until the end of the month--church selling their AM & can't have full congregation meeting until that last Sunday.

The Rohn tapered base section --listed as a 55TG1A--is supposedly designed for this insulator.

Will be an interesting project, last AM construction project was back in 1984. Started out with a 150' tower for 1570, then got it moved down to 630 two years later with a 230' tower. Had to measure several radials out 100 miles to establish what was obvious--conductivity is lousy in SE Ohio.
I too have a base insulator that was used on 300+ ft. tower.

Send me a PM and I will send you the dimensions so you can determine if it is compatible with your proposed tower.

COMMENG

TPT
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Joined: Mon Dec 03, 2007 3:18 pm
Location: St. Marys, WV

Re: base insulator

Post by TPT »

Thanks, but we have the budget to go mostly new on this project. Shipping from Canada is very reasonable, too, about $130.

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kkiddkkidd
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Re: base insulator

Post by kkiddkkidd »

TPT wrote:
Thu Jun 18, 2020 4:50 pm
Thanks, but we have the budget to go mostly new on this project. Shipping from Canada is very reasonable, too, about $130.
What is this "mostly new" and "budget" things that you speak of? I haven't heard those terms before... <g>
--
Kevin C. Kidd CSRE/AMD
WD4RAT
AM Ground Systems Company
http://www.amgroundsystems.com
KK Broadcast Engineering
http://www.kkbc.com

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