It would be interesting to know if it is inside or outside the home.
W1CL had an ongoing "discussion" with his utility because he could
measure loud broadband noise emanating from a transformer with a faulty
insulator. I think it was finally resolved but Howie hasn't been on the
160m net for many months and I don't know for sure if it got fixed.
For a while I had a persistent S8 noise floor that was making 160M
almost impossible. It started in the summer so I just assumed it was
QRN. It turned out to be a brand new LED bulb in a lamp that is left on
many hours per day. I changed the bulb with a different LED and the
problem went away.
Most of Randy's noise is very likely from a single source and finding it
is essential. Unfortunately there are probably hundreds of possible
sources in a typical home. If it is coming from outside it is much more
difficult to resolve. There are "computers" in almost every appliance
and they can be efficient noise sources. I would start by unplugging or
at least turning off things one at a time, and it wouldn't hurt to put
an oscilloscope on any switched power supplies in use. An "igniter"
for a boiler that is not turning off properly will make a lot of RF (and
it will run up the utility bill) more experience.... There is no magic fix.
Ed, n1fmp
On 12/18/2017 08:27 AM, Catherine James wrote:
You will probably need to track down the sources of the noise, and see if you
can suppress them with ferrite or other filters. You can't fix the problem at
the antenna unless it is coming from a specific direction and can be put in the
null of the loop.
Did you try rotating the loop to see if the noise drops off in certain
orientations.
--------------------------------------------
On Sun, 12/17/17, Randy Davenport <pastor.spaceboy@xxxxxxxxx> wrote:
I live in a second floor apartment that is a remodeled 1874 home. It is part
of a church. I recently
tried a mag loop in my apartment and the noise floor is about s8+ I need
help! Any suggestions? Would an AC line
filter be helpful? What ferrite mix? Anybody have any extra ferrites or other
devices?
Randy ka4nma