[RFI] Unplugging TV and plugging it back in stops RFI problem (temporarily)

[Jim Brown]

Hi Mike,

Several thoughts. Every wire connected to the TV and that home 
entertainment system is an antenna. I suggest that you start by adding 
wound ##1 chokes to the biggest/longest antennas, and work your way down 
to the shorter ones. The longest ones are usually power, and coax from 
antenna, CATV, or whatever is the source of your TV programming.

Also, consider your 80M antenna. Is it a resonant dipole fed with coax? 
Is there a serious choke at the feedpoint? If it's a vertical or other 
end-fed wire, does it have a good radial system or other counterpoise? 
And it should have a choke at the feedpoint, so that it's not using your 
house wiring as a counterpoise.

A cable box or internet modem feeding that system is also a possible 
victim.

73, Jim K9YC

\On 5/2/2021 6:27 PM, Michael Germino wrote:
> This has happened more than once.  I get on a 80 meter net and knock my wife's program off, I'm running about 600 watts.  I then try 50 watts and still kick the program off.  The next day all I do is unplug the TV for a half minute and plug it back in and I can run 800 watts.
> Over the years I have added lots of toroids on many leads at the TV.  The power to the entertainment center is thru one of Jim's brute force filters. I guess I can try more toroids on the two HDMI cables going into the TV.
> With the problem being intermittent, it looks like I can only throw toroids at it and hope one will work.  Any Ideas?
> It seems to be happening more often, but the TV can work with no problems for months or a day.
> 
> Mike73, AD6AA
> 
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