[RFI] Types of flatscreen (Re: Plasma TVs

[John DeGood]

On 11/10/2010 4:03 PM, Jim Brown wrote:
> I don't think I've ever heard of an LCD TV that radiated RFI trash, and 
> I don't think I've ever heard of a plasma TV that didn't produce trash.

My experience is just the opposite.

Our 42" plasma TV (older Gateway) is extremely clean.

Our 37" LCD TV (newer Magnavox) renders the HF bands virtually unusable.  I added a Corcom filter that effectively suppressed most of the power cable RFI, but I have been unable to satisfactorily filter the 2 HDMI connections (set-top box and DVD player).  Adding 4 Radio Shack 273-104 snap-together chokes (2 on each HDMI cable) helped some but is grossly inadequate:  because of the thickness of the HDMI cable I can only fit 3 turns through eachsnap-together choke.

73, John NU3E