XM Canada achieves 237,500 subscribers

    Solid subscriber growth in auto and multi-platform partnerships

    Subscriber definitions now more closely aligned with industry norms

    TORONTO, March 9 /CNW/ - Canadian Satellite Radio Holdings Inc. (TSX:
XSR), through its XM Canada satellite radio service, announced today it has
achieved 237,500 subscribers as of the end of its second quarter ended
February 28, 2007. In an effort to align our definitions more closely with
industry norms, our subscriber numbers now include vehicles factory-activated
with the XM service whereby automakers have agreed to pay for a portion or all
of the trial period service.
    Please refer to the Management Discussion and Analysis document that will
be filed in conjunction with the Company's second quarter financial results
for greater detail on revised subscriber definitions and subscriber counts.
    "We have experienced exceptional growth in our subscriber levels this
quarter," said Stephen Tapp, president and Chief Operating Officer of XM
Canada. "With our aggressive automotive and multi-platform partnerships and
successful holiday marketing campaign our subscriber base continues to grow at
a pace to reach our target of one million subscribers by 2010."
    XM Canada holds 80 per cent market share of factory-installed satellite
radios in the automotive sector and XM radios will be available in 115
different vehicle models in 2007. XM Canada is the exclusive music channel
provider on Air Canada's fleet that carries 32 million passengers annually. XM
Canada is also available on TELUS mobile phones, allowing Canadians to access
real-time streaming satellite radio programming. These groundbreaking and
innovative multi-platform partnerships continue to build XM Canada's profile
to further grow our rapidly expanding subscriber base.
    "XM Canada is the leading Canadian premium digital audio entertainment
business today," said Tapp. "We continue to grow our brand and offer
subscribers the best-in-class satellite coverage with a unique lineup of 100
channels including the best music, news, talk, comedy, sports and
entertainment programming in the country. We are also very excited that as of
July 2007, which is in four short months, XM Canada will be the exclusive
provider of all NHL games for the next eight years."
    The subscriber numbers reported today are based on unaudited results.

    about Canadian Satellite Radio Holdings Inc.

    Canadian Satellite Radio Holdings Inc. (TSX: XSR) operates as XM
Canada(TM) through its subsidiary, Canadian Satellite Radio Inc. XM is
Canada's premium digital audio entertainment and information company with the
best satellite coverage in the country and offering a unique lineup of premier
Canadian and international content.
    XM Canada offers listeners up to 100 channels of unique and exclusive
programming including the most NHL(TM) games, PGA TOUR(TM) and Major League
Baseball(TM) coverage, the deepest play list, and news, talk, sports,
entertainment and children's programming. After this season, XM will become
the exclusive provider of NHL games on satellite radio. Acura, Buick,
Cadillac, Chevrolet, General Motors, GMC, Harley Davidson, Honda, Hummer,
Hyundai, Infiniti, Lexus, Nissan, Pontiac, Toyota, Saab, Saturn, Suzuki and
Subaru will offer XM radios in more than 115 different models of vehicles for
model year 2007.
    XM has an exclusive Canadian license from U.S.-based XM Satellite Radio
Inc. (NASDAQ:   XMSR), the leading satellite radio provider in the U.S. with
more than 7.6 million subscribers. XM is offered on TELUS Mobile Radio(TM) and
is the exclusive music channel provider on Air Canada flights. A live stream
of selected XM Canada channels is available via a three-day complimentary
trial of XM Radio Online at http://listen.xmradio.ca. To subscribe to XM
Canada online or for more information about XM Canada's programming lineup and
radio choice, visit www.xmradio.ca
    To find out more about Canadian Satellite Radio Inc. (TSX: XSR), visit
our website at www.cdnsatrad.com.

    Forward-looking statements
    Certain statements included above may be forward-looking in nature. Such
statements can be identified by the use of forward-looking terminology such as
"expects," "may," "will," "should," "intend," "plan," or "anticipates" or the
negative thereof or comparable terminology, or by discussions of strategy.
Forward-looking statements include estimates, plans, expectations, opinions,
forecasts, projections, targets, guidance or other statements that are not
statements of fact. Although CSR believes that the expectations reflected in
such forward-looking statements are reasonable, it can give no assurance that
such expectations will prove to have been correct. CSR's forward-looking
statements are expressly qualified in their entirety by this cautionary
statement. CSR makes no commitment to revise or update any forward-looking
statements in order to reflect events or circumstances after the date any such
statement is made.
    Additional information identifying risks and uncertainties is contained
in CSR's filings with the Canadian securities regulators, available at

    %SEDAR: 00022901E

For further information:

For further information: For investor information, please contact: (416)
408-6899, investor.relations@xmradio.ca; For media information, please
contact: Wilcox Group, (416) 203-6666, XMradio@wilcoxgroup.com

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