[RFI] Can you combine two mixes?

[Tim Duffy]

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 at contesting.com] On Behalf Of David Eckhardt
Sent: Monday, December 15, 2025 10:08 PM
To: BOB WATWOSQQ
Cc: rfi at 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 at 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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-- 

*Dave - WØLEV*
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