EX-21 5 d52183_ex21.txt SUBSIDIARIES OF THE REGISTRANT Exhibit 21 SUBSIDIARIES The following is a list of the subsidiaries of the Company as of October 11, 2002: Subsidiary State of Incorporation ---------- ---------------------- Telecommunications Transmission Business Segment Comtech Antenna Systems, Inc. Delaware Comtech EF Data Corp. Delaware Comtech Systems, Inc. Delaware Comtech AHA Corporation Delaware RF Microwave Amplifier Business Segment Comtech PST Corp. New York Mobile Data Communications Services Business Segment Comtech Mobile Datacom Corp. Delaware