2012/7/18 <kr2q at optimum.net> > <snip> I'm sure someone has an SDR recording of the contest > that would clearly demonstrate two signals at once. > de Doug KR2Q > > In EUHFC 2011 we used SDR receivers to record a whole contest and it helped to find some people breaking rules & cheating. Of course we DQed them! 73 Mirko, S57AD