An Introduction to Amateur Television - Part 3 QST June 1993, pp. 35-41 Copyright © 1993 by the American Radio Relay League, Inc. All rights reserved. Part 1 appears in QST April 1993, pp. 19-23 (http://www.arrl.org/tis/info/pdf/49319.pdf) Part 2 appears in QST May 1993, pp. 43-47 (http://www.arrl.org/tis/info/pdf/59343.pdf) Part 3 appears in QST June 1993, pp. 35-41 (http://www.arrl.org/tis/info/pdf/69335.pdf)