''Its not if you  win the  race , its how you  play 
the  game'' 
 
Taking that   psk/fsk  can  achieve   6 
dB  efficiency over  on/off  keying  , to  decode 
at  a similar  level  in a  similar  time  is 
quite an achievement !
 
As Albert  points  out,  qsb  caused  the  
most  disruption, I think wspr  is  also  overlaying  
to  build up a  data  frame , which may  be  
taking  advantage of the qsb  signature 
 
Access  to the  mode is the  important  thing.  
any  (stable)  station can  send  Opera , which  
makes it the  first  'new'  all  user  data  
mode  since  the  year  'dot' 
 
One thing  that is  missing , is  some  kind of  
data server , everything  is  sent to  the  
psk-reporter  system , but  it  a  little  limited 
in  searching and displaying  
but  as yet, not  able to  find  anyone/group  
to  try  coding  one  
 
73-Graham.