BROKEN ARROW, OK--(MARKET WIRE)--Jul 22, 2008 -- ADDvantage Technologies Group, Inc. (NasdaqGM:AEY - News) announced today that it will release financial results for the three months ended June 30, 2008, prior to the market open on Monday, August 11, 2008.

The Company will host a conference call at 12:00 p.m. Eastern Time featuring remarks by David Chymiak, Chairman of the Board, Ken Chymiak, President and Chief Executive Officer, and Dan O'Keefe, Chief Financial Officer. The conference call will be available via webcast and can be accessed through the Investor Relations section of ADDvantage's website, www.addvantagetech.com. Please allow extra time prior to the call to visit the site and download any necessary software to listen to the Internet broadcast. The dial-in number for the conference call is (800) 862-9098 or (785) 424-1051 for international participants. Please call at least five minutes before the scheduled start time.

For interested individuals unable to join the conference call, a replay of the call will be available through August 18, 2008 at (800) 839-6790 (domestic) or (402) 220-6053 (international). The online archive of the webcast will be available on the Company's website for 30 days following the call.

About ADDvantage Technologies Group, Inc.

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 is 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, Tulsat-Atlanta, Tulsat-Nebraska, Tulsat-Texas, NCS Industries, ComTech Services, Jones Broadband International and Broadband Remarketing International. For more information, please visit the corporate website at www.addvantagetech.com.

     For further information
      
     Company Contact:
     Ken Chymiak
     (918) 251-2887
      
     Dan O'Keefe
     (918) 251-2887
      
     KCSA Strategic Communications
     David Burke
     (212) 896-1258
     dburke@kcsa.com