n the USA. 0892-33 10189 $3.00+.00 0 989 Society for Scientific Exploration 1 Photo Analysis of an Aerial Disc Over Costa Rica RICHARD F. H AINES 325 Langton Avenue, Los Altos, CA 94022 and JACQUES F . VALLEE ...

must have a positive and negative terminal. The negative terminal is called the earth, ground or ground plane. All antennas require a ground plane of one sort or another. Some ...