Unimo TETRA Deliveries

SOFTWARE RADIO TECHNOLOGY PLC                         

               Unimo delivers first TETRA handsets to customers                

The Directors of Software Radio Technology plc ("SRT" or the "Company") are
pleased to announce that Unimo Technology Co. Ltd ("Unimo") has made its first
commercial delivery of TETRA handsets to customers in South Korea.

The Unimo TETRA handset has been developed and manufactured in Korea and is
based upon SRT's core TETRA technology solution. During the last 12 months, the
handset has undergone extensive live network trials and received various formal
approvals such as EU Type Approval, and network interoperability certification
from Teltronic and EADS.

To date Unimo is the only Korean company to have developed and manufactured its
own TETRA handset. Their understanding of, and proximity to, the local market
has enabled them to develop a suitably customised handset and to provide a high
level of service to users through a nationwide network of offices.

Having commenced initial deliveries, SRT understands that Unimo is actively
engaged in tendering and negotiating a number of contracts both within Korea
and other international markets, which have the potential to generate
substantial future orders.

Simon Tucker, Group Managing Director of SRT said: "TETRA is a complex
technology which few have mastered, therefore the delivery of the first
handsets into customer hands is an important milestone for Unimo. As their long
term technology solution provider, we are delighted that their product has been
received so well by the market and will continue to work with them to improve
and expand their TETRA product range in the future."

Enquiries:                                                                     
                                                                               
Software Radio Technology plc                                      01761 409500
                                                                               
Simon Tucker                                                                   
                                                                               
Managing Director                                                              
                                                                               
Hanson Westhouse Limited                                          0113 246 2610
                                                                               
Tim Feather                                                                    

CityRoad Communications                                            07947 186694
                                                                               
Paul Quade                                                                     

About SRT:

Founded in 1987 and quoted on AIM in 2005, SRT focuses on the development of
turnkey technology product solutions for homeland security applications. SRT's
technologies are used by manufacturers to fast track and de-risk the
development of their own products. SRT has focused on the areas of professional
voice and data radio communications such as TETRA and maritime identification
and tracking systems, such as AIS: both of which are global standards. The
Company has a worldwide customer base with a business model based on customers
paying royalties on each product manufactured.

About Unimo:

Unimo is a Korean based company which is listed on the Korean stock exchange.
For 20 years the company has manufactured a comprehensive range of PMR radio
products and other security type products such as CCTV. Unimo has a strong
distribution and sales support network within Korea and a growing network of
international partners. www.unimo.co.kr