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Re: [TowerTalk] Power Rating of Johnson 229-203 28 uH. rollerinductors

To: "Towertalk" <towertalk@contesting.com>
Subject: Re: [TowerTalk] Power Rating of Johnson 229-203 28 uH. rollerinductors
From: "Tom Osborne" <w7why@verizon.net>
Date: Mon, 10 Jul 2006 17:55:28 -0700
List-post: <mailto:towertalk@contesting.com>



>I have been asked if the pair of Johnson 229-203
> 28 uH roller inductors I have posted for sale
> would handle an antenna tuner at 1000 watts AM
> from a BTA-1R2.
>
> It is my belief that except for an absurdly wild
> SWR (I am thinking really low) these rollers should
> be fine.
>
> WDYT?

I wouldn't be too sure about that.  You can have an awful lot of current 
running in a coil in an antenna tuner.  We used to pull 6 inch arc's off 
coils (don't try this at home) in a KW setup.  I have melted some of those 
B&W coils stock coils in a tuner. 73
Tom W7WHY

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