Investor Relations

AVIONICS INNOVATIONS AND SIRIUS RECEIVE FAA APPROVAL FOR SATELLITE RADIO IN AIRCRAFT

NEW YORK & RAMONA, CALIFORNIA— July 28, 2003— SIRIUS (NASDAQ: SIRI), known for delivering the very best in commercial-free music and premium audio entertainment, and Avionics Innovations, Inc., a leading in-flight entertainment manufacturer for general and business aviation, today announced that the Federal Aviation Administration (FAA) has approved the manufacture by Avionics Innovations of a satellite radio system for use in aircraft.

The Avionics Innovations SIRIUS Satellite Radio receiver (AI-SSR) will be available for approved aircraft via Avionics Innovations’ extensive network of dealers nationwide. The AI-SSR utilizes a SIRIUS receiver manufactured by Clarion that is specifically customized for the aviation environment by Avionics Innovations. The AI-SSR will receive SIRIUS’ 100+ streams of coast-to-coast digital entertainment, including 60 streams of 100% commercial-free music and 40+ streams of news, sports and entertainment.

Features of the AI-SSR include: Up/Down Seek Tuning, Preset Memory Mode, Scrolling Text Display, Screen Saver and Adjustable Contrast. The AI-SSR is designed to integrate into any aircraft’s intercom system so pilots and passenger can automatically switch between essential communications and SIRIUS’ 100 streams of premium programming. The AI-SSR operates on 14-28 volts of direct current, allowing use in all general and business aviation aircraft.

About Sirius

SIRIUS is the only satellite radio service bringing listeners more than 100 streams of the best music and entertainment coast-to-coast. SIRIUS offers 60 music streams with no commercials, along with over 40 world-class sports, news and entertainment streams for a monthly subscription fee of only $12.95, with greater savings for upfront payments of multiple months or a year or more. Stream Jockeys create and deliver uncompromised music in virtually every genre to our listeners 24 hours a day. Satellite radio products bringing SIRIUS to listeners in the car, truck, home, RV and boat are manufactured by Kenwood, Panasonic, Clarion and Audiovox, and are available at major retailers including Circuit City, Best Buy, Car Toys, Good Guys, Tweeter, Ultimate Electronics, Sears and Crutchfield. SIRIUS is the leading OEM satellite radio provider, with exclusive partnerships with DaimlerChrysler, Ford and BMW. Automotive brands currently offering SIRIUS radios in select new car models include BMW, MINI, Chrysler, Dodge, Jeep®, Nissan, Infiniti and Mazda. Automotive brands that have announced plans to offer SIRIUS in select models include Ford, Lincoln, Mercury, Mercedes-Benz, Jaguar, Volvo, Audi, Volkswagen, Land Rover and Aston Martin.

Click on www.SIRIUS.com to listen to SIRIUS live, or to find a SIRIUS retailer or car dealer in your area.

Any statements that express, or involve discussions as to, expectations, beliefs, plans, objectives, assumptions, future events or performance with respect to SIRIUS Satellite Radio Inc. are not historical facts and may be forward-looking and, accordingly, such statements involve estimates, assumptions and uncertainties which could cause actual results to differ materially from those expressed in any forward-looking statements. Accordingly, any such statements are qualified in their entirety by reference to the factors discussed in our Annual Report on Form 10-K for the year ended December 31, 2002 filed with the Securities and Exchange Commission. Among the key factors that have a direct bearing on our results of operations are: our dependence upon third parties to manufacture, distribute, market and sell SIRIUS radios and components for those radios; the unproven market for our service; our competitive position and any events which affect the useful life of our satellites.

About Avionics Innovations

Avionics Innovations, based in Southern California, provides quality entertainment and avionics solutions for the aviation industry. They design and manufacture a complete line of audio entertainment systems for aircraft. Products include AM/FM stereo receivers, Sirius Satellite Radio receivers, CD players, multi-disc CD changer systems, DVD Players, Flat Panel Displays, Audio-Video switch systems, MP3 based Cabin Briefing/Tour Briefing systems and speaker amplifiers. Products are designed with additional RFI and EMI shielding, and all equipment is subjected to rigorous testing to ensure that it meets FAA requirements and will not interfere with on-board navigation, communication or radar systems. Avionics Innovations distributes its product through an extensive nationwide network of avionics shops, modification centers and aircraft dealers.

For further information contact Avionics Innovations at 760-788-2602 or visit their website at www.avionicsinnovations.com