[RFI] Buying a new TV

Martin AA6E msembx-aa6e at yahoo.com
Mon Jan 10 21:32:19 EST 2005

I worry more about RFI caused by the TV.  Plasma sets have some bad
press on this mailing list (A million little lightning discharges!). 
LCD is probably more civilized (less current switched).

You could try building a screened room for TV viewing and/or ham

73 Martin AA6E

p.s.  Why don't we have two different words for "RFI to ham" and "RFI
from ham" operation?  These two sets of problems are related, but they
are also quite distinct.

--- N6KJ <n6kj at yahoo.com> wrote:

> I'm once again taking a look at the TV market.
> I'm particularly interested in a flat LCD/Plasma HDTV
> unit.  I currently own a 35" Mitsubishi (10 years old)
> which has TVI problems when I operate 40/80 meters.
> I've been unable to eliminate it no matter what I
> do.  I've reduced it considerably with toroids on
> all the inputs, proper grounding of the 
> surge-suppressor, moving my transmit antennas farther
> away, etc. but I have been unable to eliminate it.
> Another "cheap" TV in my house has never had a
> problem.  In addition, the Mitsubishi used to
> put out birdies on 20M until I added the toroids.
> My question is: how do I protect myself when buying
> a new television?  I can't "easily" take my
> 40 or 80 meter rig and antenna into the showroom
> to check for interference, assuming I buy the TV
> at a showroom instead of mail order.  All
> mail order places seem to have a hefty "restocking"
> fee if you return merchandise, not to mention the
> cost of shipping it back.  Even showrooms don't
> want to take these things back.
> I could take a portable rig and check as much as
> I can at the showroom, but it's not really practical
> to check all bands.  In my case, my current TV is
> most susceptible to 80M (the color burst circuitry
> seems to be the problem).  It's certainly not
> practical to run 80M in a showroom.
> Anyone know of a major
> retailer (Best Buy or similar?) that has a
> 30 day money back guarantee with no questions asked?
> Any good suggestions?  
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