[RFI] RFI LG Refrig Corcom filter and #31 core

[Don Kirk]

Hi Dan,

We had to use the corcom filter along with toroid core choke based on Jim’s
(K9YC) design on the power cord.  Both filters were laying out in the open,
and not right at the fridge or wall outlet.  You can see our crude test
setup in the video I posted online that documented this case.

Don (wd8dsb)

On Wed, Sep 29, 2021 at 5:15 PM Dan K2YWE <dan.k2ywe at gmail.com> wrote:

> Is putting the Corcom at the end of the cord where it plugs into the mains
> adequate or does it need to be wired in at the fridge entry?
> 73, Dan
>
>
> On Wed, Sep 29, 2021 at 3:10 PM Mike Wetzel <mjwetzel at comcast.net> wrote:
>
> > My neighbor's LG refrigerator is radiating RFI on 28MHz and Don (WD8DSB)
> > temporarily hooked up a Corcom filter and a cord wrapped around a #31
> > torroid core that eliminated the interference.  I tried contacting LG
> with
> > no success asking them to provide a filter for the refrigerator.
> >
> >
> >
> > Don came up with this APC unit AV C Type 2 see here:
> > https://www.google.com/search?q=apc+av+c+type+2
> > <
> >
> https://www.google.com/search?q=apc+av+c+type+2&ie=utf-8&oe=utf-8&client=ub
> > untu&channel=fs
> > <
> https://www.google.com/search?q=apc+av+c+type+2&ie=utf-8&oe=utf-8&client=ubuntu&channel=fs
> >>
> > &ie=utf-8&oe=utf-8&client=ubuntu&channel=fs
> >
> >
> >
> > It says it has 55db EMI suppression.  I can add a core to a line cord.
> >
> >
> >
> > It seems like a lot of places have the raw filters (Corcom) but they are
> > not
> > available in a package that would be neighbor friendly and instill
> > confidence.
> >
> >
> >
> > Does anyone have any other suppliers of a packaged EMI filter?
> >
> >
> >
> > Mike Martin suggested this could be a nice business opportunity if one
> was
> > to produce such a unit (filter and core).
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Mike W9RE
> >
> >
> >
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> >
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