One correction. The pole I suspect does not have a transformer but the
one near it does. Pole is here, you can plug this in google maps and
view it. 35.247489600931196, -89.0080609481562
I triangulated intensively first at hf, then at 144mhz. Took notes, drew
diagrams, etc. Could not hear it at 440mhz. Using FT-817 on AM. Did the
triangulating while it was pulsing to tell for reasonable certainty
which noise I was hunting. Looked this pole over til my arms hurt
several times with the ultrasonic. And for kicks listened to most poles
up and down the street on the 3 phase.
On 1/11/21 1:51 PM, Leonard Halvorsen wrote:
An arc inside the transformer oil drum, perhaps. That might deaden it
to the Ultrasonic Dish.
Corroded connection on one end of a winding.
An arc between turns.
" " to the core or the inside of the drum.
Maybe something more like corona than a hard arc.
There may be a spark gap (over-voltage protection) on/inside the drum.
What hardware, other than lightning arresters (arcing internally)
would not be affected by rain and I could not hear with the dish?
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