The missing ball...

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HadYourPhil
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The missing ball...

Post by HadYourPhil » Tue Apr 21, 2015 8:50 am

I know. Sounds like a personal problem...

Where can I find a pair of "Johnny Balls"? I have a tower that somehow is missing one...
Johnny Balls.jpg
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kkiddkkidd
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Re: The missing ball...

Post by kkiddkkidd » Tue Apr 21, 2015 9:06 am

The last balls and arms that I bought a couple years ago came from:

Austin Insulator
7510 Airport Rd, Mississauga, ON L4T 2H5, Canada
+1 905-405-1144
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Kevin C. Kidd CSRE/AMD
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kkiddkkidd
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Re: The missing ball...

Post by kkiddkkidd » Tue Apr 21, 2015 9:23 am

Part II,

I also meant to say that I have lost considerably more top balls than bottom. Depending on their orientation, I believe (but have no real evidence) that water collects in the top ball and upon a major strike, turns to steam and blows the ball apart. If the ball opening and shaft is sitting straight up, I try to put a bead of silicon sealer around the joint to maybe keep out water. Moisture can enter via various other paths so that may be wasted effort.

All this talk of balls, shafts, joints and orientation could get a person banned on some lists...
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Kevin C. Kidd CSRE/AMD
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KK Broadcast Engineering
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HadYourPhil
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Re: The missing ball...

Post by HadYourPhil » Tue Apr 21, 2015 9:41 am

LOL!

Good point on the missin' ball.
We improve things by making them worse...

PA_TUNE
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Re: The missing ball...

Post by PA_TUNE » Tue Apr 21, 2015 10:52 am

I've always referred to those as "Static Drain Balls". Normally, "Johnny Balls" are a name for guy insulators.

HadYourPhil
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Re: The missing ball...

Post by HadYourPhil » Tue Apr 21, 2015 11:26 am

OK. Makes more sense, actually. I just equated Johnny Balls with Jacob's Ladder.
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kcbooboo
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Re: The missing ball...

Post by kcbooboo » Tue Apr 21, 2015 12:30 pm

Aren't those balls supposed to be oriented such that they're horizontally separated, rather than vertically, so if anything accumulates and drips down, it doesn't short them out? Or am I thinking of something else?

Bob M.

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kkiddkkidd
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Re: The missing ball...

Post by kkiddkkidd » Tue Apr 21, 2015 12:55 pm

kcbooboo wrote:Aren't those balls supposed to be oriented such that they're horizontally separated, rather than vertically, so if anything accumulates and drips down, it doesn't short them out? Or am I thinking of something else?

Bob M.
You are 100% correct that they should, but I see them vertical all the time mostly with no ill effects. Then again, in this case if the arc didn't quench, it could be the reason for the loss of the upper ball. With this type of mounting, it would be very easy to move them to side-by-side when replacing the top ball.

Some of the arc gaps supplied with older towers/insulstors were impossible to place SxS without bending or cutting heavy steel arms.
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Kevin C. Kidd CSRE/AMD
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AM Ground Systems Company
http://www.amgroundsystems.com
KK Broadcast Engineering
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RGORJANCE
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Re: The missing ball...

Post by RGORJANCE » Tue Apr 21, 2015 1:52 pm

"Goodness, gracious...great balls of fire".

This is a new on for me....please let us know what you finally find out about this mystery.

Fossil

ChuckG
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Re: The missing ball...

Post by ChuckG » Tue Apr 21, 2015 2:32 pm

<><><><><><><><><>
Chuck Gennaro
Central Wisconsin

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Re: The missing ball...

Post by Radio Ranger » Tue Apr 21, 2015 3:30 pm

A question about this tower base---I notice a copper air line feeding a gas stop connector for the FM line, but shouldn't the isocoupler below that also be pressurized? Maybe some of them aren't? I know that the ERI models are gas tight to pass nitrogen through them.

Steve Brown
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Minneapolis

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Deep Thought
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Re: The missing ball...

Post by Deep Thought » Tue Apr 21, 2015 6:38 pm

The KTL versions aren't, and I think that's what all of those are.
Mark Mueller • Mueller Broadcast Design • La Grange, IL • http://www.muellerbroadcastdesign.com

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gassing the line

Post by Radio Ranger » Wed Apr 22, 2015 7:54 am

Thanks for the info, Mark. Does that mean that the coax from the shack to the isocoupler is foam, and you need to run a copper or plastic gas line from the shack out to the tower base?

Steve B

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Deep Thought
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Re: The missing ball...

Post by Deep Thought » Wed Apr 22, 2015 8:17 am

These are usually used for FM TPOs well under 10 KW and the ones I've seen installed have had either two gas-block EIA flanges used to connect to the isocoupler and then a piece of Teflon or similar tubing around it to the "hot" side, or just the tubing from the building to the hot side.
Mark Mueller • Mueller Broadcast Design • La Grange, IL • http://www.muellerbroadcastdesign.com

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