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On Mon, 26 Jan 2004 21:07:24 -0500, "Jack Painter"
wrote: Richard, my earlier posts described the grounding my friend, here is quick summary: 1.Well grounded 100' tower, hundreds of feet of many radials, rods, etc. Survived many strikes. 2. Feedline from tower's dipole was disconnected about 20' from tower where it enters a buried pvc conduit that travels 150' to house, then up to second story shack. Where nothing is grounded, except by virtue of house AC wiring - a bad I know (not mine either). 3. Ground current from the tower strike most likely entered the coax feedlines at the disconnect point as they entered the pvc conduit then traveled on into house. 4. House current also took huge jolts, zorching all kinds of connected equipment, phones, tv's etc. 5. Outbuilding with radio equipment connected took huge hit, ball lightning inside room fried test cords connected to nothing, hanging on test bench, where the leads touched tile floor, huge blow-out of tile. AC power blew wall warts across room, computers next to each other had .22 rifle bullet sized hole between them. Equipment in this bldg was grounded, and some that was was damaged, others not touched. In short, a massive, multiple strike-path hit that may not be protectable from - but I realize there was a lot missing from a good ground picture here also. Jack Hi Jack, You know, it sounds like the lightning hit your house/out-building and went toward the tower. 73's Richard Clark, KB7QHC |
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