I found ren's email interesting also... even to the point of asking for
more! what did you guys find in your deep drilling??? i too am an
amateur radio nut and some of my most interesting wierdness occured with
open wire feedlines; a rf static way of feeding an antenna or so it
seemed sometimes. swr zaps and rf burns into the fingertips eyooo!
also your mention of iron? pipe on insulator as verticle antenna and
voltage buildup. one am radio station i engineered for about 10 years
was a half wave vert. on brown ceramic insulator, 450 feet of tower 2
foot wide on the side. tons of iron all resting on that ceramic
insulator. insulated guy wires on this tower "snapped" with large static
cracks before every storm; the guy cables were insulated perhaps 3 times
as they came off tower; at top, once or twice in middle and at ground
anchors. what an exciting and sometimes scary event to witness. against
the nite sky the entire tower and its pyramid of guy wire was lit with
lite for a microsecond; this might happen every 5 seconds or only once [
and the darn transmitter would shut down; during the most important part
of the football game!] that tower was always hot! when i worked on that
transmitter [an old rca 5kw am with tubes; 5 kilovolt plate supply.] i
had to ground the tuning network even when completely shut down or a
nasty shock [ i've had many so am a vaque expert] not of ac or dc type
and not rf burn either. i agree that some static power is available but
when i tried to measure the charge off of that 450 foot tower i never
got any useful readings, and it depended on the tool measuring. an
osilloscope just showed tons of noise, other am stations nearby etc. an
analog meter was fried on that test and a digital just gave random and
changing readings even thru a diode and cap filter. i gave up. brent
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