The North tower of the WTC had a 350 FT antenna, but the South tower didn't, why not?
Pictures:
http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1777&bih=887&tbm=isch&tbnid=ia37Ro6yi0d2HM:&imgrefurl=http://science.howstuffworks.com/engineering/structural/wtc.htm&imgurl=http://static.ddmcdn.com/gif/wtc-intro.jpg&w=400&h=462&ei=kJ4_UM62A4bE9gSw44HgAw&zoom=1&iact=hc&vpx=1526&vpy=150&dur=323&hovh=241&hovw=208&tx=168&ty=93&sig=100568773543651444319&page=1&tbnh=112&tbnw=103&start=0&ndsp=55&ved=1t:429,r:13,s:0,i:194
Pictures:
http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1777&bih=887&tbm=isch&tbnid=ia37Ro6yi0d2HM:&imgrefurl=http://science.howstuffworks.com/engineering/structural/wtc.htm&imgurl=http://static.ddmcdn.com/gif/wtc-intro.jpg&w=400&h=462&ei=kJ4_UM62A4bE9gSw44HgAw&zoom=1&iact=hc&vpx=1526&vpy=150&dur=323&hovh=241&hovw=208&tx=168&ty=93&sig=100568773543651444319&page=1&tbnh=112&tbnw=103&start=0&ndsp=55&ved=1t:429,r:13,s:0,i:194
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Because there was one on the North Tower, meaning there was no need for one on the South Tower.