SRT signs Russian AIS Supply Agreement

SOFTWARE RADIO TECHNOLOGY PLC                         

                    SRT signs Russian AIS Supply Agreement                     

Software Radio Technology plc ("SRT" or the "Company") is pleased to announce
that it has signed an AIS supply agreement with Transas Navigator ("Transas")
of Russia with an initial frame order for Class A products worth US$1.25
million which is expected to be delivered over the next twelve months in
minimum call-offs of US$250,000.

The Russian maritime authorities have recently announced a national mandate
which is expected to require most commercial vessels to fit a Class A or Class
B AIS device over the next five years. SRT understands that the initial
requirement under the mandate is for Class A devices and that it will affect an
estimated 4,000 vessels over the next one to two years with a further 25,000
vessels expected to require a mixture of Class A and B devices within the five
year timeframe.

SRT's standard GPS based AIS Class A and Class B units have been customised for
Transas to include the Russian operated positioning system, GLONAS, and other
features and functions required by local regulations. This work was completed
between November 2011 and March 2012 and the first units delivered to Transas
earlier this month for in-house functional testing and formal testing and
approval by relevant Russian marine and radio authorities. The approval process
is ongoing and is expected to take up to five months. During this period SRT
will commence the production planning and manufacture of the first GLONAS Class
A units ready for delivery towards the end of Q2 in financial year 2012/13.

Transas is based in St. Petersburg and is Russia's largest marine electronics
company with a well-established, dominant market share through its nationwide
dealer network.

Simon Tucker, SRT CEO said; "Transas is the dominant player in the Russian
marine market with a market share which we estimate at over 80%. This mandate
has created a substantial market opportunity and our partnership provides
Transas with the product it needs to supply the resulting demand. As with other
markets we expect that this mandate is the beginning of the Russian AIS
programme which will present other opportunities for our broadening product
range."

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

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.