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Johnson Roller Inductor

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Robert King 1199144878Mon, 31 Dec 2007 23:47:58 +0000 (UTC)
Can anyone tell me the Inductance of a Johnson roller, part # 226-2-5? 30 mh?
Can't locate my old E F Johnson manual. 

Thanks,
Bob W3GH
David C. Hallam 1199149149Tue, 01 Jan 2008 00:59:09 +0000 (UTC)
My catalog of Johnson inductors lists;

226-1 22.5 uH  3" x 12 3/4"
226-3 13.5 uH  3" x 10 3/4"
226-5 8 uH  3" x 9 1/4"

Maybe that helps.

David
KC2JD/4> -----Original Message-----
> From: David C. Hallam 
> Behalf Of Robert King
> Sent: Monday, December 31, 2007 6:48 PM
> To: Amps at contesting.com
> Subject: [Amps] Johnson Roller Inductor
> 
> 
> Can anyone tell me the Inductance of a Johnson roller, part # 
> 226-2-5? 30 mh?
> Can't locate my old E F Johnson manual. 
> 
> Thanks,
> Bob W3GH
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/...
> 
> 
> 
>
Pat Barthelow 1199151078Tue, 01 Jan 2008 01:31:18 +0000 (UTC)
Hello Bob,

What is the diameter, length, and number of turns, assuming 
Turns per  inch, is constant?

All the Best, 73,
Pat Barthelow     aa6eg at hotmail.com
http://www.jamesburgdish.org
Subscribe: http://bambi.net/jamesburg.html
Jamesburg Earth Station  Moon Bounce Team> From: Pat Barthelow 
> To: w3gh at kiski.net; Amps at contesting.com
> Date: Mon, 31 Dec 2007 19:59:09 -0500
> Subject: Re: [Amps] Johnson Roller Inductor
> 
> My catalog of Johnson inductors lists;
> 
> 226-1 22.5 uH  3" x 12 3/4"
> 226-3 13.5 uH  3" x 10 3/4"
> 226-5 8 uH  3" x 9 1/4"
> 
> Maybe that helps.
> 
> David
> KC2JD/4
> 
> > -----Original Message-----
> > From: Pat Barthelow 
> > Behalf Of Robert King
> > Sent: Monday, December 31, 2007 6:48 PM
> > To: Amps at contesting.com
> > Subject: [Amps] Johnson Roller Inductor

> > Can anyone tell me the Inductance of a Johnson roller, part # 
> > 226-2-5? 30 mh?
> > Can't locate my old E F Johnson manual. 
> > Thanks,
> > Bob W3GH
Radio WC6W 1199212377Tue, 01 Jan 2008 18:32:57 +0000 (UTC)
Hi Bob,

22.5 uH

The 221-2 has the same inductance as the 221-1 but,
the turns are wound in the opposite direction.

This is also true for the -4 & -6 parts which are the
same values as the -3 & -5 respectively.

73 & Happy New Year!
  Marv WC6W

http://wc6w.50webs.com/--- Robert King  wrote:

> Can anyone tell me the Inductance of a Johnson
> roller, part # 226-2-5? 30 mh?
> Can't locate my old E F Johnson manual. 
> 
> Thanks,
> Bob W3GH
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/...
>
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