[TVI-RFI-EMI] I need help here

[Pat Thurman, K7KR]

FireBrick wrote:
> 
> Yes sir.
> I checked the outside connections and the ground wire from that device to
> the ground rod.
> I checked all connections inside the house.
> 
> And do the other reply, being in a urban area, my little sw receiver finds
> noise no matter where I go. I would need slightly more specific equipment to
> find the source/leakage points.
> 
> And just for the heck of it, I powered one of the tvs via my UPS,
> disconnected from the ac line to see and the tvi remained which more or less
> discounts ac line pickup doesn't it?
> 
> > Did you check all of the cable TV connections including those outside? I
> have
> > "fixed" a variety of problems by tightening all of the threaded collars
> with
> > a wrench-NOT hand tight. Good luck!

Sounds a lot like the classic 'non-linear rectification' problem.  Given
that you have a 'preferred' direction, I'd agree with the suggestion
that you use a portable sw rcvr and hunt in that direction.  Those
handheld jobs coupled with a small homemade handheld yagi will give you
some directivity.  Check the Handbook for some DF tips...  I've had good
luck finding stuff by tuning to 130Mhz am or so, and using the
directivity to peak or null the source...

Of course, you're on your own after you find that it's your neighbors
brand new subwoofer 8-)
-- 
73, Pat  K7KR