hi to all, i got that information from a 50MHz reflector .. the story is in english ... Enjoy the information :-) http://news.bbc.co.uk/2/hi/science/nature/7632331.stm -- _________________________________________________________ Member of Muensterland-Contest-Crew / RRDXA / UKSMG #2506 (it's NOT how many watts you run, it's how BIG they are! )