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Re: [RFI] Can you combine two mixes?

To: "'David Eckhardt'" <davearea51a@gmail.com>, "'BOB WATWOSQQ'" <wa2sqq@gmail.com>
Subject: Re: [RFI] Can you combine two mixes?
From: "Tim Duffy" <k3lr@k3lr.com>
Date: Tue, 16 Dec 2025 00:41:03 -0500
List-post: <mailto:rfi@contesting.com>
Hello Bob

Putting cores with different mixes together in the same stack does not yield 
good results, but having two stacks of each mix, does work fine.

I am using 3 cores each of #31 and #43 in a filter (along with a CORCOM AC line 
filter). The ferrite works just like you would hope - to broaden the frequency 
response of the choke filter.

73
Tim K3LR

-----Original Message-----
From: RFI [mailto:rfi-bounces+k3lr=k3lr.com@contesting.com] On Behalf Of David 
Eckhardt
Sent: Monday, December 15, 2025 10:08 PM
To: BOB WATWOSQQ
Cc: rfi@contesting.com
Subject: Re: [RFI] Can you combine two mixes?

This question has been asked several times before.  The answer is NO.

Dave - WØLEV

On Tue, Dec 16, 2025 at 12:53 AM BOB WATWOSQQ <wa2sqq@gmail.com> wrote:

> If I want to broaden the operating frequency of a common mode choke, can
> you stack two different mixes, say a 31 and a 43 to create one common
> choke?
>
>
>
>
> *Best 73 de WA2SQQElmwood Park, NJ"The only dumb questions are those we
> don't ask"*
> _______________________________________________
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> RFI@contesting.com
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>


-- 

*Dave - WØLEV*
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