R: [RFI] 6 meter TVI (audio only)

Maurizio Panicara Maurizio Panicara" <i4jmy@iol.it
Wed, 12 May 1999 21:08:24 +0200


It looks RF detected from TV audio amplifier rather than other causes.
What is a bit strange is not to have the same problem on lower frequencies.
I would place some ferrite (one for each input or output) toroids or sticks
along all the cables connected to the TV set.
The hope is that some of the wire inside TV is not playing as the receiving
antenna otherwise the only possible cures are:
1) A metal cage or aluminium foil around TV set.
2) An emi circuit on the TV board.
Because of the relatively high frequency, already a few turns over the
ferrites
should be enough.

73,
Mauri I4JMY


-----Messaggio originale-----
Da: Scott Neader <neader@centuryinter.net>
A: rfi@contesting.com <rfi@contesting.com>
Data: mercoledý 12 maggio 1999 3.31
Oggetto: [RFI] 6 meter TVI (audio only)


>
>Playing with the 6 meter E-skip tonight down to the SE USA and my neighbor
>to the SE called saying that he is hearing me very strong on all channels,
>audio only.  They have cable, but since it is all channels and audio only,
>I am probably safe to assume that the TV is the culprit, right?  He says it
>is an almost new Zenith TV.
>
>I'm a rookie at this... what steps would you all suggest to cure this
problem?
>
>FYI, my setup is a Kenwood TS-930 HF rig driving a DEM 6m Transverter, then
>using a Mirage 6m amplifier (about 150w out).  Antenna is a 6 ele Cushcraft
>at about 80 feet.  Neighbor is so close to the SE that I could spit out my
>window and hit him.  Hmmm... maybe that's an idea...
>
>- Scott KA9FOX
>
>
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