[RFI] FW: TV set RFI questions

EDWARDS, EDDIE J EDWARDS, EDDIE J" <eedwards@oppd.com
Mon, 24 Jul 2000 09:14:18 -0500

Below is an example of why RFI is such a problem for consumers.  This is a
response by Panasonic to my questions about TV RFI.  Even TV manufacturer's
don't seem to understand the problem, or at least their customer service
folks don't have a clue at all.  I'll probably get the same response from
JVC as well.  Sony just e-mailed me their 800 number which has a VRU that
dead-ends me at a busy signal every time.  Lot's of help that is!  I won't
be buying Sony this time.

Remember this when a neighbor is complaining about RFI, and be willing to
help if they will allow you to.  You're the only help he has out there!

BTW: I have alreay tried the suggested "cure" with my Sony picking up audio
rectification.  An AC poewr line filter has no effect on that type of RFI.

de ed -K0iL

> -----Original Message-----
> From:	Panasonic Consumer Products 21
> [SMTP:consumerproducts21@PANASONIC.com]
> Sent:	Sunday, 23 July, 2000 3:50 PM
> To:	'eedwards@oppd.com'
> Subject:	RE: TV set RFI questions
> Dear Mr. Edwards,
> Thank you for your e-mail inquiry regarding Panasonic TV's.  We recommend
> an
> in-line RFI filter on the ac power cord.  This type of filter can be
> purchased at your local radio shack store.  Opening the cabinet for any
> reason would void the manufactures warranty.  We do not have any
> recommedations for the TV emitting noise to a nearby HF reciever
> unfortunately.  If we can further assist you on any other Panasonic,
> Technics, or Quasar products; please contact the Panasonic Customer Call
> Center (1-800-211-7262).  For your convenience, the call center is open
> from
> 9:00 am to 9:00 pm (Est.; Mon - Fri) and from 9:00 am to 7:00 pm (Est.;
> Sat/Sun).
> Best regards,
> Panasonic Customer Call Center
> > -----Original Message-----
> > From:	EDWARDS, EDDIE J [mailto:eedwards@oppd.com]
> > <mailto:[mailto:eedwards@oppd.com]>
> > Sent:	Wednesday, July 19, 2000 11:34 AM
> > To:	Panasonic Consumer Products
> > Subject:	TV set RFI questions
> > 
> > I am currently shopping for a new TV set, but before I decide on a brand
> I
> > need to find out the following technical information:
> > 1)	Do your 27" TV sets (or their internal power supplies) generate RF
> > hash or birdies (signals) that can be picked up by a nearby shortwave
> (HF)
> > reciever (say in the 1.8 to 30 Mhz range)?
> > 2)	If after purchasing your 27" TV set it is found to generate
> > interference to nearby HF recievers, do you have any recommendations to
> > reduce this type of interference?
> > 3)	If your 27" TV sets pick up RFI from a nearby radio transmitter,
> > what are your recommendations.  (Typically, this RFI is "audio
> > rectification" in most cases.)
> > 4)	I have found that nearly every TV picks up RFI through audio
> > rectification, and to eliminate it a ferrite-type RF choke must be added
> > to each internal speaker wire.  Radio Shack sells these chokes just for
> > that purpose.  Would opening the cabinet and adding such an RF choke
> void
> > your warranty?
> > 
> > Thanks for your help.
> >
> > Ed Edwards

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