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THE AM BULLETIN BOARD => Technical Forum => Topic started by: W3SLK on September 19, 2006, 10:04:48 PM



Title: Consumer Electronic RFI
Post by: W3SLK on September 19, 2006, 10:04:48 PM
I don't know if this fits here but it seemed natural anyway. I snagged this off of the AMPS reflector. A ham had inquired about Panasonic's Plasma screen TV. Here was the response that he got back from Panasonic: Dear MR X

  Thank you for your inquiry regarding the Panasonic Plasma televisions. We
  apologize for the delay in providing you a reply to your inquiry and we
  hope that this delay has not caused you any inconvenience. A plasma panel
  works on the same principal as a florescent light. This system emits RF
  that falls within the AM broadcast band. It is possible to experience RF
  interference coming from the panel itself. We do not have the frequency
  range that may be effected.

  Thank You,
  Panasonic Consumer Support


Title: Re: Consumer Electronic RFI
Post by: Tom WA3KLR on September 21, 2006, 04:56:01 PM
A 50" plasma set draws 500 Watts.  The plasma sets are real power hogs.  Most of that power is going into the display. 

And the manufacturers are working on plasma sets approaching 100".   I assume you'll need 240 V. service for sets that large (100"/50")squared X 500 Watts = 2 KW.  It will be like having a leenyar in your living room.  Imagine the RFI from THAT sucker.


Title: Re: Consumer Electronic RFI
Post by: Jim, W5JO on September 21, 2006, 07:23:58 PM
I don't know if this fits here but it seemed natural anyway. I snagged this off of the AMPS reflector. A ham had inquired about Panasonic's Plasma screen TV. Here was the response that he got back from Panasonic: Dear MR X

  Thank you for your inquiry regarding the Panasonic Plasma televisions. We
  apologize for the delay in providing you a reply to your inquiry and we
  hope that this delay has not caused you any inconvenience. A plasma panel
  works on the same principal as a florescent light. This system emits RF
  that falls within the AM broadcast band. It is possible to experience RF
  interference coming from the panel itself. We do not have the frequency
  range that may be effected.

  Thank You,
  Panasonic Consumer Support

What ever happened to Part 15 interference?  Does anyone know how to complain about having it?  Aren't there specific standards to be met?


Title: Re: Consumer Electronic RFI
Post by: Vinnie/N2TAI on September 24, 2006, 07:49:33 PM
We had a Daewoo DVD player that threw hash all over the 80 meter band, it didn't even have to be turned on, it threw hash whenever it was plugged in. Ended up giving it away. I guess the FCC isn't bothering to enforce Part 15, products like that Daewoo should not be allowed into this country


Title: Re: Consumer Electronic RFI
Post by: Pete, WA2CWA on September 24, 2006, 08:15:16 PM
To read Part 15 - Radio Frequency Devices,
Go here and click on the FCC Part 15 link:
http://amfone.net/Amforum/index.php?topic=8560.0


Title: Re: Consumer Electronic RFI
Post by: Jim, W5JO on September 24, 2006, 08:43:32 PM
Pete maybe you can shed some light.  If I have a problem with a devilce certified under Part 15 and I wish to complain about it, how do I do that.

I have a projection TV that eats up 3.5=4 meg and I called the manufacturer about it.  When the guy heard my question he forwarded me to a supervisor, who hung up on me when I asked about the radiation that seems to be excessive.

What's a fellow to do?



Title: Re: Consumer Electronic RFI
Post by: Steve - WB3HUZ on September 24, 2006, 10:03:39 PM
Get the FCC number off the back of the unit. Report that and mfr and model to the FCC.
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