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[Towertalk] Large Ferrite Beads?

To: <towertalk@contesting.com>
Subject: [Towertalk] Large Ferrite Beads?
From: ccc@space.mit.edu (Chuck Counselman)
Date: Mon, 7 Oct 2002 14:20:23 -0400
At 5:00 PM +0300 10/7/02, Tõnno Vähk wrote:
>can anybody help me in finding ferrite beads that can be slipped on Heliax
>LDF4-50A? ID has to be 0.63" but the biggest ones I see in web are 0.5" ID
>(Amidon page, etc...) I want to make baluns for my stacked tribanders.


In April 2002, Amidon quoted to me:

Fair-Rite     Amidon               _Dimensions (inches)_    _AsubL__  Price
Part No.      No. (????)    Qty.   O.D.    I.D.    Thick    (nH/T^2)  (each)
----------    ----------    ---    -----   -----   -----    --------  ------
5977006401    FT-100-77     200    1.000   0.610   0.500      2500    $0.63
5943006401    FT-100-43     200    1.000   0.610   0.500       850    $0.65

Now, 0.610 inches is 0.02" smaller than you want, but maybe you could 
shave the jacket of your Heliax(R), or ask Amidon for larger sizes. 
I believe that Fair-Rite makes them.

73 de Chuck, W1HIS

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