Hale, I have just about the same hash on 75 that you describe.  Each piece 
of it is about 50KC wide and if I tune to the edges of it, it sounds like 
it's being modulated by speach; although no actual voice is perceptable. 
Signals usually come above it in the evening and night.
73
The Other Howard, WA9RYF
----- Original Message ----- 
From: "Gale Conard" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, May 26, 2012 12:05 AM
Subject: About the plasna tv


> First, thanks to all those who responded to my cry for help.
>
> The consensus seems to be, that I should trade it in.  That is under
> discussion.
>
> However, the tv belongs to my wife, and she took the only one in the store
> that met her requirements for viewing.  Fortunately, she doesn't watch a
> lot, especially, since she discovered the joy of reading books on my 
> Victor
> Reader.  So, I think we can work out a schedule.
>
> I did some more investigating.  The noise is bothersome across the 80-75
> meter band with peaks in spots.  It sounds like a 60-cycle rumble with 
> other
> hash between the cycles.  Sometimes, I think I can hear music and/or 
> voices
> in the background.  That may be my imagination, though.
>
> I'm not sure about 40 meters, because the line noise is so bad.  It may be
> masking the tv noise.  There doesn't seem to be much on the higher bands.
>
> Lloyd, there are already ferrite cores on the tv power cord, and one on 
> the
> tv cable.  Would you believe, the cores came with the tv, and with
> instructions for installing them.
>
> I do need to check my grounds and shields.  I have been using a Time Wave
> antenna noise canceller to combat the line noise for years.  I also have 
> two
> noise reducing DSP units in the speaker line, one in the rig, and one
> external.
>
> I think I'm just going to have to live with it.
>
> Thanks, again.
>
>
> 73,
> Gale
> [log in to unmask]