Agreement with Wright Design

SOFTWARE RADIO TECHNOLOGY PLC                         

SRT contracts Wright Design to develop its own range of TETRA products for sale
                                   in Europe                                   

Software Radio Technology plc ("SRT") is pleased to announce that it has
entered into an agreement with Wright Design to create a range of low cost,
user friendly OEM TETRA professional mobile radio ("PMR") products.

Over the last five years SRT has developed a complete TETRA technology solution
which has been sold in various forms to eight manufacturers in Europe and Asia.
The technology, which has been designed to be flexible and to enable extensive
local customisation, will provide a substantial expansion of choice for TETRA
equipment buyers.

SRT believes a significant market exists in Europe for a low cost, user
friendly OEM handset which traditional PMR dealers, network operators and other
interested parties can buy, brand as their own and customise on a per user
basis. As announced on 29 March 2007, and following the success of a similar
combined OEM and technology licence business model in the Marine business, SRT
decided to develop and produce its own TETRA OEM products to address this
market.

SRT has chosen Wright Design to develop the mechanics and styling of the final
products. Wright Design displayed a deep knowledge of the PMR market place and
a genuine enthusiasm for the project.

Simon Tucker, SRT's Managing Director said: "Europe remains a significant
growth market for digital PMR/TETRA and due to encryption issues it is
difficult for non-EU based PMR manufacturers to address it. However, in our
opinion, demand for a competitively priced, user friendly range of handsets is
strong due to the currently limited choice. Our OEM programme is designed to
fill this gap. Wright Design is the ideal choice for us given their experience
and this has been confirmed by the strong relationship which is developing
between the SRT OEM and Wright Design teams."

Enquiries:                                                                     
                                                                               
Software Radio Technology plc                                      01761 409500
                                                                               
Simon Tucker                                       [e-mail]
                                                                               
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.