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#31
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Ground Or Not To Ground Receiving Antenna In Storm ?
"Roy Lewallen" wrote I'd be willing to wager that there are places in Florida which have more lightning strikes in a single summer than have occurred at your QTH (or mine) in the past 80 years. ======================================= Roy, your's is a safe bet. Nevertheless, statistically speaking, the good people of Florida should be more scared of dying from gunshot wounds. But it doesn't seem to worry them very much. ---- Reg. |
#32
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Ground Or Not To Ground Receiving Antenna In Storm ?
This has been an interesting discussion, and prompted me to do a tiny
bit more research. It seems to me that if there's any nonlinear phenomenon which allows some pressure waves to travel through air faster than the speed of sound, surely a nuclear blast would produce enough pressure to excite it. But it doesn't seem to. From http://www.globalsecurity.org/wmd/intro/nuke-blast.htm: "During the time the blast wave is passing through the superheated atmosphere in the fireball, it travels at supersonic velocities. After it leaves the vicinity of the fireball, it slows down to the normal speed of sound in the atmosphere. As long as the blast wave is expanding radially, its intensity decreases approximately as the square of the distance. When the expanding blast wave from a nuclear air burst strikes the surface of the earth, however, it is reflected, and the reflected wave reinforces and intensifies the primary wave." Roy Lewallen, W7EL |
#33
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Ground Or Not To Ground Receiving Antenna In Storm ?
Reg Edwards wrote:
Nevertheless, statistically speaking, the good people of Florida should be more scared of dying from gunshot wounds. But it doesn't seem to worry them very much. Now that so many Floridians are packing, it's the criminals who should be worried. -- 73, Cecil http://www.qsl.net/w5dxp |
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