I'll update this post shortly with new Driveby System Maps that this round replaced 49 Mhz with 44 Mhz. This made a HUGE difference in the end-resulting map, and seriously pinpointed the power pole noted above.
So it seems that the key at least in this case so far was to use a wideband pan-adapter to hunt for a massive spike noise source. Once I did that I was able to easily identify the pole(s) I now now about. Incidentally these poles are between 600-700 ft from my home.
In this particular case it appears that there are also some SERIOUS safety concerns. The primary ground line has been severed about 1.5 ft. above the earth...and the wire coming down from the