On 11/9/2010 9:33 AM, Jim Miller KG0KP wrote:
> Anybody know if the newer Plasma TVs are as bad for RFI as the early ones
> were supposed to have been?
This thread sure has covered a lot of territory with even ... maybe a
few facts some where in there.
There are a lot of variables involved in answering that question fully
but the basic answer is No, in general the new Plasmas are not as bad as
the older ones. OTOH there are still some that are pretty bad.
Flat screen was mentioned, but almost any of today's TV's are flat
screens be they CRT (few even made any more) and there are LCD and CFT
(IIRC a form of LCD) in addition to Plasma. Also as someone mentioned,
some power supplies are also nasty RFI generators.
LED sets are a misnomer and have bordered on the edge of false
advertising the way they were presented. It's been answered before, but
LED just refers to the light source for the LCD.
Plasma displays have 3 disadvantages beyond the possible RFI problem.
They are heavier than LCDs, they have a highly reflective surface, and
they no longer have much of an advantage in viewing angle, brightness,
or contrast compared to LCDs.
LCDs now have viewing angles far beyond the range of being useful. I
have a 40" Samsung that sets in the SE corner of the living room. The
screen is clear and bright from any were in the room including right up
against the two converging walls. It has a listed useful viewing angle
of over 170 degrees and I believe it. It can be viewed in bright
daylight as well. (Many if not most use the LED light source) The new
sets have brightness and contrast ranges comparable to the Plasma sets.
HOWEVER there are still some inexpensive LCD sets out there that do not
meet the above criteria.
When mounting on a wall the the greater weight of the plasma display can
be a definite disadvantage as can the highly reflective surface when
there are windows that let a lot of light into the room. Placement of
lights in the room cam also become problematic.
Sony. I don't purchase anything with their label on it if I can avoid
it. I still remember their root kit and attitude toward customers about
it. They replaced the offending CD's but did nothing about the cost of
completely cleaning the drives and reinstalling all the software.
73
Roger (K8RI)
> thanks es 73, de Jim KG0KP
>
>
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|