Technical Communications Corporation Michael P. Malone

100 Domino Drive Chief Financial Officer

Concord, MA 01742 – 2892 (978) 287 5100

CONCORD, MA (December 28, 2000) - Technical Communications Corporation (NASDAQ:TCCO) today announced that it has been awarded a contract for a major expansion of a South American government’s secure communications system. The contract, valued at $700,000, will provide and deploy TCC’s CSD-3324E Secure Telephone, Fax and Data desktop system to the government’s critical communications locations. This deployment will increase the government’s system by 30% and continues the network expansion that is progressively linking the mission-critical elements of the government.

TCC’s CSD-3324E is part of the Commanders Net family of communication products that provide fully interoperable, highly secure communications between the telephone system and field radios in the land, air and naval elements of the government. The Commanders Network System is well regarded for providing reliable secure communications even in the harshest and most threatening environments.

George Camp, TCC’s Regional Sales Manager for South America said, "Our excellent performance with the currently deployed system gives the customer confidence in expanding their network and we expect that this expansion will continue for both the field and office agencies. Governments are requiring increased direct communications with the field forces for both civilian and military activities. This will continue to drive expansion of our secure communications networks."

Carl Guild, TCC’s President and CEO, commented, " This project was one of several that have been delayed due to national budget issues and we are pleased that it has been released with the award to TCC. Introduction and expansion of these critical foreign communications networks is a principal focus of TCC as it provides expanded market positions for both of our Office and CipherONE™ Network products."

The Commanders Net System is used in over thirty countries for high security communications over the existing telephone and radio networks. A principal feature of the system is its scalability as the deployment requirements expand and its capability to operate over weak or marginal network lines.

TCC has delivered the equipment required for this contract during December, 2000.

TCC designs, manufactures, and supports superior grade secure communications systems that protect highly sensitive information transmitted over a wide range of data, voice and fax networks. TCC’s proven security solutions protect information privacy on every continent in over 100 countries. Government agencies, militaries, financial institutions, telecom carriers and multinational corporations worldwide rely on TCC to protect their communications networks.

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Matters discussed in this news release, including any discussion of or impact, expressed or implied, on Technical Communications Corporation's (the Company) anticipated operating results and future earnings, including statements about the Company’s ability to achieve growth and profitability, contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended. The Company’s operating results may differ significantly from the results indicated by such forward-looking statements. The Company’s operating results may be affected by many factors, including but not limited to future changes in export laws or regulations, changes in technology, the effect of foreign political unrest, the ability to hire, retain and motivate technical, management and sales personnel, the risks associated with the technical feasibility and market acceptance of new products, changes in telecommunications protocols, the effects of changing costs, exchange rates and interest rates. These and other risks are detailed from time to time in the Company’s filings with the Securities and Exchange Commission, including the Form 10-K for the fiscal year ended October 2, 1999, Form 10-Q for the quarter ended January 1, 2000, Form 10-Q for the quarter ended April 1, 2000 and the form 10-Q for the quarter ended July 1, 2000.