Mr. Robert Scherpenseel is the general manager and microwave technician for the Northwest Video of Kalispell, Montana. He was chief engineer with WEVR FM of Troy, New York, chief engineer with KBTK radio, and engineer with KMSO-TV electronics technician at Montana State University in installing and maintaining their television and radio and recording systems. Mr. Scherpenseel is going to talk on "A Low Cost TDR".