What:
 Ken Chymiak, President and Chief Executive Officer of ADDvantage
 Technologies Group (AEY), will preside over the closing bell to
 celebrate the company's switch to NASDAQ.

 Where:
 NASDAQ MarketSite - 4 Times Square - 43rd & Broadway - Broadcast Studio

 When:
 Thursday, September 13, 2007 at 4:00 p.m. ET

 Contacts:
 David Burke
 212.896.1258; dburke@kcsa.com

 NASDAQ MarketSite:
 Jolene Libretto; 646.441.5220; mobile - 347.219.9539
 Jolene.Libretto@NASDAQ.com

Feed Information:

The closing bell is available from 3:50 p.m. to 4:05 p.m. on Galaxy 26. The downlink frequency is 4040 Vertical; Audio 6.2-6.8. The feed can also be found on Waterfront fiber 1623. If you have any questions, please contact Jolene Libretto at (646) 441-5220.

Radio Feed:

An audio transmission of the closing bell is also available from 3:50 p.m. to 4:05 p.m. on uplink IA6 C band / transponder 24, downlink frequency 4180 horizontal. The feed can be found on Waterfront fiber 1623 as well.

Webcast:

A live Webcast of the NASDAQ Closing Bell will be available at: http://www.nasdaq.com/reference/marketsite_about.stm

Photos:

To obtain a hi-resolution photograph of the Market Close, please go to http://www.nasdaq.com/reference/marketsite_events.stm and click on the market close of your choice.

About ADDvantage Technologies Group (AEY):

ADDvantage Technologies Group, Inc. supplies the cable television (CATV) industry with a comprehensive line of new and used system-critical network equipment and hardware from leading manufacturers, including Scientific-Atlanta and Motorola, as well as operating a national network of technical repair centers. The equipment and hardware ADDvantage distributes are used to acquire, distribute, and protect the broad range of communications signals carried on fiber optic, coaxial cable and wireless distribution systems, including television programming, high-speed data (Internet) and telephony.

ADDvantage operates through its subsidiaries, Tulsat Corporation, ADDvantage Technologies Group of Nebraska, Inc., NCS Industries, Inc., ADDvantage Technologies Group of Missouri, Inc., ADDvantage Technologies Group of Texas, Tulsat-Atlanta, LLC, Jones Broadband International, Inc. and Tulsat-Pennsylvania LLC. For more information, please visit the corporate web site at http://www.addvantagetech.com.

The information in this announcement may include forward-looking statements. All statements, other than statements of historical facts, which address activities, events or developments that the Company expects or anticipates will or may occur in the future, are forward-looking statements. These statements are subject to risks and uncertainties, which could cause actual results and developments to differ materially from these statements. A complete discussion of these risks and uncertainties is contained in the Company’s reports and documents filed from time to time with the Securities and Exchange Commission.