GSM-noise "buzz" issue / ways forward

Uwe Klein wiederling at
Mon Sep 22 18:19:22 CEST 2008

On 9/22/08, Joerg Reisenweber <joerg at> wrote:

> Andy,
>  I agreed with you on nearly everything with regard to this buzz issue. I only
>  am somewhat upset in the meantime we don't see any action on implementing
>  bead fix to actual MP ASAP. Instead every time I suggest to fix new devices,
>  and *then* continue to look for good fixes for already existing ones, this
>  request gets torn down by an immediate vivid discussion about contamination
>  pathes etc., leaving impression to TPE EE we are not on same page about doing
>  new PCB to include EMI-filters on 3 contacts of JK4401.

The ferrite bead fix is imho not applicable to automated manufacturing.


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