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 RESTON, Va., Aug 04, 2008 (BUSINESS WIRE) ----SkyTerraCommunications, Inc. (OTCBB:SKYT) and its subsidiary Mobile Satellite Ventures LP (MSV) have scheduled its conference call todiscuss 2008 second-quarter financial results and otherdevelopments for Tuesday, August 5, 2008 at 10:00 a.m. EDT. Thecall will be led by Alexander H. Good, Chairman, Chief ExecutiveOfficer and President of SkyTerra and Vice Chairman, ChiefExecutive Officer and President of MSV; and Scott Macleod,Executive Vice President and Chief Financial Officer of SkyTerraand MSV.

 A presentation to accompany the call will be filed as an 8-K withthe SEC and will be available on the SkyTerra and MSV Web sitesearly in the morning of August 5, 2008. See the investor andfinancial sections at www.skyterra.com or www.msvlp.com before thecall.

 Dial-in Instructions:

 The toll-free dial-in for the teleconference is (866) 362-4820.International callers should dial +1 (617) 597-5345. The accesscode is 73633238. Please allow at least 10 minutes prior to thescheduled start time to connect to the teleconference.

 Dial-in Audio Replay:

 A replay of the teleconference will be available beginning at 12:00p.m. EDT August 5, 2008, until 11:59 p.m. EDT on August 19, 2008.To access the replay, please call (888) 286-8010. Internationalcallers should dial +1 (617) 801-6888. The access code is 29672758.

 About Mobile Satellite Ventures and SkyTerra Communications, Inc.

 MSV delivers mobile wireless voice and data services primarily forpublic safety, security, fleet management and asset tracking in theU.S. and Canada. The company's next-generation hybridsatellite-terrestrial communications network is expected to provideseamless, transparent and ubiquitous wireless coverage of theUnited States and Canada to conventional handsets. When completed,the network will support communications in a variety of areasincluding public safety, homeland security, aviation,transportation and entertainment, by providing a platform forinteroperable, user-friendly and feature-rich voice and high-speeddata services. Mobile Satellite Ventures is a joint venture betweenMobile Satellite Ventures LP and Mobile Satellite Ventures (Canada)Inc. MSVLP is owned and controlled by SkyTerra Communications, Inc.(OTCBB:SKYT). For more information go to: http://www.msvlp.com.

 Statement under the Private Securities Litigation Reform Act

 This news release may contain forward-looking statements within themeaning of the Private Securities Litigation Reform Act, withrespect to plans described in this news release. Such statementsgenerally include words such as could, can, anticipate, believe,expect, seek, pursue, proposed, potential and similar words. Suchforward-looking statements are subject to uncertainties relating tothe ability of SkyTerra and MSV to raise additional capital orconsummate a strategic transaction or deploy the next generationsystem, as well as the ability of SkyTerra and MSV to execute theirbusiness plan. We assume no obligation to update or supplement suchforward-looking statements.

 SOURCE: SkyTerra Communications, Inc. and Mobile Satellite VenturesLP