Posted for "Matt Hapgood" <matt.hapgood@alumni.duke.edu>:

 
 As best I can tell, the WxWorx animation mode (Loop) starts only with the
 graphics since you started downloading.  Unlike the internet, I don't
 believe the WxWorx gets old radar information.  If you've just turned on
 your WxWorx, you won't get any looping.  If you've been flying for an hour
 with the machine on, you should get about 10 - 12 loops (60/5).
 
 Matt