TETRA Licence Agreement

SOFTWARE RADIO TECHNOLOGY PLC                         

                            TETRA Licence Agreement                            

Software Radio Technology plc ("SRT" or the "Company") is pleased to announce
that it has signed a TETRA licence agreement with Switzerland based Swiss Space
Sensors Technology AG ("SSST").

SRT has received an upfront payment of US$225,000 and will receive royalties
based upon sales achieved by SSST in the future. Under the terms of the
agreement there are no ongoing costs, warranties or obligations for SRT.

SSST is developing telecommunication technologies for the TETRA and WiMAX
networks with cooperation from Ecole Polytechnique Federale de Lausanne in
Switzerland. SSST is a member of the Stratxx Near Space Technology AG group.

                                    -ends-                                     

Enquiries:                                                                   
                                                                             
Software Radio Technology plc                              [phone]
                                                                             
Simon Tucker                                     [e-mail]
                                                                             
Chief Executive Officer                                                      
                                                                             
Westhouse Securities Limited                             [phone]
                                                                             
Tim Feather                                                                  
                                                                             
Matthew Johnson                                                              

About SRT:

Software Radio Technology plc, develops advanced radio communications
technologies which are used to create enabling modules and OEM products. SRT
Marine Technology Limited focuses on VHF and AIS technologies for use in
navigation and homeland security identification and tracking applications. SRT
Marine Technology provides its solutions in a variety of module and OEM product
formats.