So are the "spurs" he was referring to simply a overdriven RTTY signal ? Andy K3UK ----- Original Message ----- From: "Anderson, Charles, MSG, 255ACS, SCS, 6820" <Charles.Anderson at msjack.ang.af.mil> > Chen, > I received another email from Chazz which states it was not the shift he > was referring to. > Think it was what we called spurs. > > >