There are some exceptions like communication towers where it is known in advance that they will receive multiple hits over the years, and need to be engineered to survive. And I can't even think about what it must have been like in a fire lookout tower during a storm. I have seen the rods on each corner of the towers in the mountains of western Washington and the #4/0 copper stapled to the rock in the vicinity. I understand that the lookout occupants had a special stool with glass legs that they sat on, feet off the floor, until the storm passed. Lightening is pretty much ignored in the lowlands of western Washington, but the Cascade Range is a different matter. And, since the lookout towers were usually built on bare rock , ground is poorly defined.
73, Rick Dettinger K7MW > > > A direct strike does pretty much what it wants to regardless of what > prevention you have in. > > 73, Guy ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html