EXHIBIT 21.1 LIST OF SUBSIDIARIES OF COMMUNICATIONS INSTRUMENTS, INC. (AS OF 12/31/98) Name of Entity Name of Owner -------------- ------------- Electro-Mech, S.A. de C.V., a corporation Communications Instruments, Inc., a North organized under the laws of Mexico Carolina Corporation Kilovac Corporation, a California corporation Communications Instruments, Inc., a North Carolina Corporation Corcom, Inc., an Illinois corporation Communications Instruments, Inc., a North Carolina Corporation Kilovac International, Inc., a California Kilovac Corporation, a California corporation corporation Kilovac International FSC, Ltd., a Kilovac Corporation, a California corporation corporation organized under the laws of Jamaica Corcom, S.A. de C.V., a corporation Corcom, Inc., an Illinois corporation organized under the laws of Mexico Corcom West Indies Ltd., a corporation Corcom, Inc., an Illinois corporation organized under the laws of Barbados Corcom International Ltd., a corporation Corcom, Inc., an Illinois corporation organized under the laws of Barbados Corcom GmbH, a corporation organized Corcom, Inc., an Illinois corporation under the laws of Germany Corcom Far East Ltd., a corporation Corcom, Inc., an Illinois corporation organized under the laws of Hong Kong