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Re: [TowerTalk] Ferrite material Laird 28

To: "'Richard \(Rick\) Karlquist'" <richard@karlquist.com>, <towertalk@contesting.com>
Subject: Re: [TowerTalk] Ferrite material Laird 28
From: "Bert Almemo" <balmemo@sympatico.ca>
Date: Mon, 27 Mar 2017 13:12:10 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hi Rick,

Thanks for your comments.

I'm was planning to use the ferrite toroids to make common-mode chokes for
HF. I found 2.4"x1.4"x .5" toroids on Digikey, Laird #28 for around USD 4.00
in quantities of 10. A better price than Fair-Rite and assuming the
properties of the ferrite materials are close.

Bert VE3NR


-----Original Message-----
From: Richard (Rick) Karlquist [mailto:richard@karlquist.com] 
Sent: Monday, March 27, 2017 7:46 AM
To: Bert Almemo; towertalk@contesting.com
Subject: Re: [TowerTalk] Ferrite material Laird 28

It all depends on what application you are
using it in, what frequency, what power level,
etc.  I have measured various competitor's
"equivalents" to material 43 and the found
that they are considerably lossier.  This
mattered a lot for my application, but may
not matter for yours.

Rick N6RK

On 3/26/2017 3:00 PM, Bert Almemo wrote:
> Hi guys,
>
> Does anyone have any experience with ferrite material #28 from Laird? A
> friend of mine tells me it's similar to material #43.
> Comments appreciated.
>
> 73 Bert, VE3NR
>
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