NEWS RELEASE

For Immediate Release

Technical Communications Corporation
100 Domino Drive
Concord, Massachusetts 01742-2892

Contact: Michael P. Malone,
Director of Finance
(978) 287 5100
http://www.tccsecure.com

TECHNICAL COMMUNICATIONS CORPORATION
ANNOUNCES MOVE TO NASDAQ SMALLCAP MARKET

CONCORD, MA, September 15, 1999 - Technical Communications Corporation (NASDAQ: TCCO) reported today the Company will be listed on the NASDAQ SmallCap Market System effective with the open of business Friday, September 17, 1999. The Company first received notification from NASDAQ in March 1999 regarding its listing status on its National Market System, because the market value of the Company's public float was not greater than or equal to $5,000,000 in accordance with NASDAQ Marketplace Rule 4450(a)(2).

In July 1999, the Company requested and was granted a hearing with NASDAQ and as a result of that meeting has agreed with NASDAQ to move its listing to the SmallCap

About Technical Communications Corporation

Based in Concord, Massachusetts, Technical Communications Corporation's products and services provide encryption security for the mission-critical networks of governments and corporations around the world. With over 35 years' experience, TCC is the trusted supplier where secure data transmission is a critical need.

Market System.

Matters discussed in this news release, including any discussion of or impact, expressed or implied, on the Company's 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 and the Company's ability to renegotiate its line of credit with its banks. Although the Company's securities trade on the NASDAQ National Market System, no assurances can be given that the Company will continue to be in compliance with all listing requirements or that the Company's securities will continue to be listed on NASDAQ National Market or on NASDAQ SmallCap market. The delisting of the Company's securities from the NASDAQ could have a material adverse effect on the market price of the Company's securities. These and other risks are detailed from time to time in the Company's filings with the Securities and Exchange Commission, including Form 10-K for the fiscal year ended October 3,1998 and Form 10-Q for the quarter ended January 2, 1999 and April 3, 1999 and July 3, 1999.