AIS Agreement

Software Radio Technology plc ("SRT" or the Company)              

                       SRT expands AIS customer network                        

Following the successful launch of SRT's low cost AIS transponder solution for
small commercial and leisure boats, the Directors of the Company are delighted
to announce the signing of a further two agreements. These agreements, with New
Brunswick Technologies in the USA and Pronav in Norway, take the total
distributor and licensee base to 17 companies around the world.

The SRT AIS solution provides customers with a fully compliant module around
which they can create their own unique product. The AIS market has been growing
since the 2002 IMO (International Maritime Organisation) global mandate for all
vessels over 300 tonnes. Today AIS is actively being used as a safety device by
leisure boat owners and a tracking tool by port authorities and other
commercial marine operators. However, Directors of SRT expect the main demand
for AIS to come via national mandates commencing during 2007 and believe that
the growing and diverse customer base places the Company in an excellent
position in this market.

Simon Tucker, SRT's Managing Director said, "We are delighted to have entered
into agreements with New Brunswick Technologies and Pronav. As with all our
customers, we will work closely with them to develop their unique AIS offerings
and to maximise the return from their established sales channels. We continue
to negotiate with other carefully selected companies and expect our customer
base to continue to expand."

Enquiries:

Software Radio Technology plc                                      01761 409500
                                                                               
Simon Tucker                                       [e-mail]
                                                                               
Hanson Westhouse LLP                                              0113 246 2610
                                                                               
Tim Feather/Matthew Johnson                     [e-mail]

About SRT:

Founded in 1987, SRT is a UK stock market listed company that develops
complete, ready to manufacture wireless technology solutions for applications
within homeland security tracking and digital communications applications.
SRT's solutions enable manufacturers to significantly fast track, de-risk and
cost reduce the development and manufacture of final form complex products. The
company has a worldwide customer base and is the world's leading provider of
Marine-AIS and PMR-TETRA technology solutions earning royalties on each product
manufactured by its customers.