[aprssig] Need Information on APRS PowerPoint

[Wagw9wag at aol.com]

I am giving a presentation to a number of Hams this winter on APRS. I  wonder 
if anyone knows where I might find a PowerPoint Presentation on APRS. The  
session will be for approximately one hour. If anyone knows where I might get  
such a presentation, it would be appreciated.
Thanks   Wag  W9WAG
_wagw9wag at aol.com_ (mailto:wagw9wag at aol.com)