AMSAT/TAPR Joint Hamvention Banquet   Friday, May 17th   Bruce Perens, K6BP Presents "The Evangelist's Dilemma: Driving New Ideas With Nothing But Words".     Kohler Presidential Banquet Center, 4548 Presidential Way, Kettering, OH   Doors open at 1830 for a cash bar with buffet dinner served at 1915.    Orders must be placed in advance at AMSAT's web site http://store.amsat.org/catalog/product_info.php?products_id=88 or through the AMSAT Office.   Tickets will not be sold at Dayton, but tickets purchased online may be collected at the AMSAT booth at Hamvention. Orders must be placed by Tuesday, May 14th.   Cost is $30 per person.