Re: [RFI] A Bizzare EMI Story

[Grant Saviers <grants2@pacbell.net>]

Shouldn't cars be required by the FCC to conform to Class A or B 
limits?  After all, they are a large collection of computers with some 
wheels attached.
Something ARRL ought to pursue.  It's not rocket science to solve this, 
only $ of manufacturing cost.
Grant KZ1W

On 11/7/2018 8:36 AM, Les Cockram wrote:
> Front page article in today’s WSJ concerning am radio rfi in EV vehicles.
> Find an easy cure and you will a rich person.
>
> Sent from LTC
>
>
> > On Nov 7, 2018, at 11:29, David Eckhardt <davearea51a@gmail.com> wrote:
> >
> > Electronic 'mosquitoes' (RFI producers) make wonderful objects for target
> > practice....
> >
> > Dave - WØLEV
> >
> > > On Wed, Nov 7, 2018 at 4:41 AM Mike NA6MB <na6mb.mike@gmail.com> wrote:
> > >
> > > I vote hammer !
> > >
> > > NA6MB
> > >
> > >
> > >
> > > > On 11/6/2018 7:30 PM, donovanf@starpower.net wrote:
> > > > From: "Sam Josuweit" <samjos@epix.net>
> > > > To: topband@contesting.com
> > > > Sent: Wednesday, November 7, 2018 2:15:35 AM
> > > > Subject: Topband: Bizzare EMI Story
> > > >
> > > > So after taking a few years off from radio, over the summer I decided to
> > > > rebuild my station and antennas and get back on the air. Was doing fine
> > > > until a few weeks ago, my noise level was S9 on 80 meters. Using a
> > > beverage
> > > > it was ok but on my TX antenna it was 120hz hash. I tried everything to
> > > > locate the source, unplugged computers, Directv, DSL modem, freezer you
> > > name
> > > > it, checked my entire ground system, it still was there. To make matters
> > > > worse after listening to it on AM I noticed I could hear the local NOAA
> > > > Weather radio station, which is on 162.55 MHZ FM! Now the local
> > > transmitter
> > > > for NOAA is on the next mountain over and line of site with my remote
> > > QTH,
> > > > but 162MHZ to 3.7MHZ?? This really had me stumped, and I was just about
> > > to
> > > > give up. I have an old farm house and don't have too many power outlets,
> > > but
> > > > I realized I missed checking the one in our bedroom, and there sits my
> > > NOAA
> > > > weather alert radio. Unplugged it and the hash was gone. Since these
> > > radios
> > > > monitor constantly for alerts, they must just mute the audio when not in
> > > > use. Apparently something in the radio power supply failed causing the
> > > power
> > > > noise, which was then getting modulated by the muted audio. This was
> > > > propagating thru my whole electrical system. I'm just glad I found it.
> > > > Debating if I should take a look at the weather radio or smash it with a
> > > > sledge hammer.
> > > >
> > > > Sam (N3XZ)
> > > >
> > > > _______________________________________________
> > > > RFI mailing list
> > > > RFI@contesting.com
> > > > http://lists.contesting.com/mailman/listinfo/rfi
> > > --
> > > Thanks,
> > > Mike
> > > NA6MB
> > >
> > > _______________________________________________
> > > RFI mailing list
> > > RFI@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/rfi
> > --
> >
> > *Dave - WØLEV*
> > *Just Let Darwin Work*
> > *Just Think*
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
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