Gentlemen (and Mal)
I've been busy renovating my home and my LF RX antenna farm. During the
work, I recently discovered the source of a very annoying noise source
after months of detective work(ie. cursing every time I needed to adjust
my phasing canceler). The noise seems to be coming down my power line
that feeds my house. After some poking around the power grid there is
only one other house connected to the transformer we get power from and
my DF work seems to indicated the the noise 'orientates' form the pole
with the xfmr near the neighbours house hidden in the woods. My theory
is that my neighbour has some sort of electrical gismo that runs 24/7
that creates this noise and it has a pipeline to my house via the
neutral supported cable.
During my renos I went mobile with my 1m diameter electrostatic loop as
it needed to come down to make way for things that make the XYL happy.
I found after considerable walking there was a magic distance away from
the evil pole that the noise simple stopped no matter what direction I
pointed the loop. Unfortunately, this is not the case for other types
of antennas such a my mini-whip, unshielded multi turn loop, and large
single turn loop. My theory is that the induction field of the noise
finally gets weak enough that the electrostatic loop wins out... I'm
sure someone will set me straight on why soon...
Anyway, the discovery of the electrostatic loops immunity to this noise
at the magic distance where the real estate it is planted on is still
mine has me wondering this:
If I increase the diameter of the loop from say 1m to 2.5m will I see an
increase in SNR?
My gut feeling has me saying that this may seem like commonsense that it
would be true but something about the theory of how the electrostatic
loop works has me thinking otherwise...
Concurrently, I'm planning a diplomatic mission to the neigbour's with a
box of ferrite, 1m loop and a bottle of Scotch...
73 es tu
Scott
VE7TIL
PS- I'm still seeing DCF39 daily on the 1m loop! I hope to have the
grabber and DCF39 logger back on the net by April 1st.
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