Performance Upgrades for Demand Assigned and Ad Hoc UHF SATCOM

Services Planned for Fall ‘09

CARLSBAD, Calif.–(EMWNews)–ViaSat Inc. (Nasdaq:VSAT) received a $9.3 million award from the Defense

Information Systems Agency (DISA) to continue the development of the UHF

SATCOM Integrated Waveform Channel Controller. This second phase of the

Integrated Waveform (IW) development enables demand assigned services on

UHF SATCOM networks to support new applications that require better

performance and higher channel throughput.

IW, a requirement of the Department of Defense (DoD) Standardization

Program, is designed to prolong the life of the UHF Demand Assigned

Multiple Access (DAMA) SATCOM System through a series of network

upgrades. DISA has increased the UHF SATCOM military performance

specifications to match the need for faster, more efficient, and

easier-to use communications.

The previous phase of this effort, awarded in April 2007, focused on

implementing only pre-assigned services into the IW. In this new phase,

ViaSat will enable demand assignment of preplanned services, support of

ad-hoc services, and dynamic bandwidth allocation; all controlled by the

ViaSat Channel Controller. During this final phase of the IW controller

development, DISA will upgrade the IW Channel Controller architecture by

integrating ViaSat RT-1828 radios at all Naval Computer and

Telecommunications Area Master Stations.

“DISA leadership in the evolution to IW will

significantly enhance the capability of tactical UHF satellite

communications for the warfighter,” said Phil

Berry, VP and GM of ViaSat Government Satcom Systems. “ViaSat

has invested heavily in development of both the RT-18XX terminal family

and UHF Channel Control capabilities and the DOD’s

selection of these as their platform of choice for IW reaffirms our

commitment.”

ViaSat is also in the process of implementing the IW pre-assigned

services into ViaSat MD-1324 modems and the RT-18xx family of UHF

network terminals and expects an additional award in the near future for

implementation of demand assigned services in these platforms.

About ViaSat (www.viasat.com)

ViaSat produces innovative satellite and other digital communication

products that enable fast, secure, and efficient communications to any

location. The company provides networking products and managed network

services for enterprise IP applications; is a key supplier of

network-centric military communications and encryption technologies to

the U.S. government; and is the primary technology partner for gateway

and customer-premises equipment for consumer and mobile satellite

broadband services. The company owns five subsidiaries: US Monolithics,

Efficient Channel Coding, Enerdyne Technologies, Intelligent Compression

Technologies, and JAST. These companies design and produce complementary

products such as monolithic microwave integrated circuits, DVB-S2

satellite communication components, video data link systems, data

acceleration and compression products, and mobile satellite antenna

systems. ViaSat has locations in Carlsbad, CA, and Duluth, GA, along

with its Comsat Laboratories division in Germantown, MD. Additional

field offices are located in Boston, MA, Baltimore, MD, Washington DC,

Australia, China, India, Italy, and Spain.

Safe Harbor Statement

Portions of this release, particularly statements about the performance

and deliveries of ViaSat products and technology, may contain

forward-looking statements regarding future events and are subject to

risks and uncertainties. ViaSat wishes to caution you that there are

some factors that could cause actual results to differ materially,

including but not limited to: contractual problems, product defects,

manufacturing issues or delays, regulatory issues, technologies not

being developed according to anticipated schedules, or that do not

perform according to expectations; and increased competition and other

factors affecting the telecommunications industry generally. In

addition, please refer to the risk factors contained in ViaSat’s

SEC filings available at www.sec.gov,

including without limitation, ViaSat’s annual

reports on Form 10-K and ViaSat’s quarterly

reports on Form 10-Q. Readers are cautioned not to place undue reliance

on any forward-looking statements, which speak only as of the date on

which they are made. ViaSat undertakes no obligation to update or revise

any forward-looking statements for any reason.

Comsat Labs and Comsat Laboratories are tradenames of ViaSat, Inc.

Neither Comsat Labs nor Comsat Laboratories is affiliated with COMSAT

Corporation. “Comsat”

is a registered trademark of COMSAT Corporation.

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