I once had a rfi problem like this and it turned out to be a very cheap
vcr/dvd player, the switching power supply was the problem and the rfi came
from a neighbors house. cut the power on the main breaker off and then on
maybe the unit will turnoff until someone presses the on/off switch.
richard/WB4BYQ
On Wed, Nov 2, 2011 at 4:43 PM, Doug Grant <dougk1dg@gmail.com> wrote:
> I have a strange case here.
>
> There's a broadband noise coming out of my neighbor's house that is fairly
> constant across most of the 20M band, but drops precipitously at about
> 14265. It is s5-6 below that frequency, and down to s1 at 14270.
>
> I have swept across the entire HF spectrum with a portable receiver and
> loop at the neighbor's house (it is a vacation house, and they aren't there
> much - I have not been inside), and there are no other significant noises.
>
> And since they aren't there, it has to be something like maybe a wall wart
> that radiates even when the equipment is off.
>
> There is no cable TV service in the area, and whatever the source, the
> noise is really loud at the power line entry. There is DSL in the area, but
> none of the other houses (including mine) seem to have this noise.
>
> So what can create a broadband crud that covers the whole 20M band, but
> drops like a rock at 14265? Has anyone seen such a signature?
>
> 73,
>
> Doug K1DG
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