PUBLICATION NUMBER A 1 571ISSUE 2.5.95AND20 GHz AND 2.6 GHzVXI COUNTERSRACAL INSTRUMENTS LTD.RACAL INSTRUMENTS LTD.480 Bath Road, Slough, Berkshire SL1 6BE, England.Telephone: (01628) 604455. Fax: (01628) 662017RACAL INSTRUMENTS INC.4 Goodyear Street, P.0. Box C-19541, Irvine. CA 92713, USA.Telephone: (714) 859-8999. Fax: (714) 859 2505RACAL SYSTEMS ELECTRONIQUE S.A.18 Avenue Dutarte, 78150 Le Chesnay, France.Telephone: (1) 39 55 88 88. Fax: (1) 39 55 67 35RACAL SYSTEMS ELETTRONICA srlStrada 2, Palazzo C420090 Miianofiori Assago Milan, Italy.Telephone: (02) 5750. 1796 (auLres.). Fax: (02) 5750.1828RACAL ELECTRONIK SYSTEM GmbHFrankenforster Slrasse 21, 51427 Bergisch Gladbach 1, Germany.Telephone: 02204 9222-0. Fax: 02204 21491EEX3EBPUBLICATION DATE: MARCH 1991Copyright ® 1991 by Racai-Dana Instruments Ltd. Printed In England. All rights reserved.This book or parts thereof may not be reproduced in any form without written permission of the publishers.»