UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

   
                                   FORM 10-Q/A
                                (AMENDMENT NO. 1)
    

              QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

For The Quarterly Period Ended June 30, 1998

Commission file number  0-24710

                                  CD RADIO INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

Delaware                                                              52-1700207
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(State or other jurisdiction of                                 (I.R.S. Employer
incorporation or organization)                               Identification No.)

                           1180 Avenue of the Americas
                            New York, New York 10036
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                    (Address of principal executive offices)
                                   (Zip code)

                                  212-899-5000
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              (Registrant's telephone number, including area code)


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              (Former name, former address and former fiscal year,
                          if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

                                 Yes [X] No [ ]

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

   
    Common Stock, $.001 par value                    23,145,104 shares
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             (Class)                        (Outstanding as of November 6, 1998)
    


                                  CD RADIO INC.
                        (A Development Stage Enterprise)


                                      INDEX


Part II - Other Information                                                    3

Signatures                                                                     4


                                     Part II

                                Other Information


Item 6.  Exhibits and Reports on Form 8-K

         (a) See the Exhibit Index for a list of exhibits filed herewith.

         (b) The Company filed a Current Report on Form 8-K, dated May 28, 1998,
describing the enhancement of its broadcast system as a result of the addition
of a third in-orbit satellite.


                                   SIGNATURES


         Pursuant to the requirements of the Securities and Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.

                                  CD RADIO INC.


                                  By: /s/ John T. McClain
                                      -------------------
                                      John T. McClain
                                      Vice President and Controller
                                      (Chief Accounting Officer)

November 18, 1998

                                    EXHIBITS


Exhibit                            Description
- -------                            -----------
3.1        Amended and Restated Certificate of Incorporation (incorporated by
           reference to Exhibit 3.1 to the Company's Registration Statement on
           Form S-1 (File No. 33-74782) (the "S-1 Registration Statement")).

3.2        Amended and Restated By-Laws (incorporated by reference to Exhibit
           3.2 to the S-1 Registration Statement).
   
3.3        Certificate of Designations of 5% Delayed Convertible Preferred Stock
           (incorporated by reference to Exhibit 10.24 to the Company's Form
           10-K/A for the year ended December 31, 1996 (the "1996 Form 10-K")).

3.4        Form of Certificate of Designations of Series B Preferred Stock
           (incorporated by reference to Exhibit A to Exhibit 1 to the Company's
           Registration Statement on Form 8-A, filed with the Commission on
           October 30, 1997 (the "Form 8-A")).
    
3.5.1      Certificate of Designations, Preferences and Relative, Participating,
           Optional and Other Special Rights of 10 1/2% Series C Convertible
           Preferred Stock (the "Series C Certificate of Designations")
           (incorporated by reference to Exhibit 4.1 to the Company's
           Registration Statement on Form S-4 (File No. 333-34761) (the "S-4
           Registration Statement")).

3.5.2      Certificate of Correction of the Series C Certificate of Designations
           (incorporated by reference to Exhibit 3.5.2 to the Company's Annual
           Report on Form 10-K for the year ended December 31, 1997 (the "1997
           Form 10-K")).

3.5.3      Certificate of Increase of 10-1/2% Series C Convertible Preferred
           Stock (incorporated by reference to Exhibit 3.5.3 to the Company's
           Form 10-Q for the period ended March 31, 1998).

4.1        Form of Certificate for Shares of Common Stock (incorporated by
           reference to Exhibit 4.3 to the S-1 Registration Statement).

4.2        Form of Certificate for Shares of 10 1/2% Series C Convertible
           Preferred Stock (incorporated by reference to Exhibit 4.4 to the S-4
           Registration Statement).

4.3        Rights Agreement, dated as of October 22, 1997, between the Company
           and Continental Stock Transfer & Trust Company, as Rights Agent
           (incorporated by reference to Exhibit 1 to the Form 8-A).

4.4        Form of Right Certificate (incorporated by reference to Exhibit B to
           Exhibit 1 to the Form 8-A).


Exhibit                            Description
- -------                            -----------
   
4.5        Indenture, dated as of November 26, 1997, between the Company and IBJ
           Schroder Bank & Trust Company, as Trustee (incorporated by reference
           to Exhibit 4.1 to the Company's Registration Statement on Form S-3
           (File No. 333-34769) (the "Units Registration Statement")).
    
4.6        Form of Note (incorporated by reference to Exhibit 4.2 to the Units
           Registration Statement).

4.7        Pledge Agreement, dated as of November 26, 1997, between the Company,
           as Pledgor, and IBJ Schroder Bank & Trust Company, as Collateral
           Agent (incorporated by reference to Exhibit 4.5 to the Units
           Registration Statement).
   
4.8        Warrant Agreement, dated as of November 26, 1997, between the Company
           and IBJ Schroder Bank & Trust Company, as Warrant Agent (incorporated
           by reference to Exhibit 4.3 to the Units Registration Statement).

4.9        Form of Warrant (incorporated by reference to Exhibit 4.4 to the
           Units Registration Statement).

4.10       Form of Preferred Stock Warrant Agreement, dated as of April 9,1997,
           between the Company and each Warrantholder thereof (incorporated by
           reference to Exhibit 4.11 to the 1997 Form 10-K).

4.11       Form of Common Stock Purchase Warrant granted by the Company to
           Everest Capital Master Fund, L.P. and to The Ravich Revocable Trust
           of 1989 (incorporated by reference to Exhibit 4.12 to the 1997 Form
           10-K).
    
10.1.1     Lease Agreement, dated October 20, 1992, between 22nd & K Street
           Office Building Limited Partnership and the Company (incorporated by
           reference to Exhibit 10.3 to the S-1 Registration Statement).

**10.1.2   Lease Agreement, dated as of March 31, 1998, between Rock-McGraw,
           Inc. and the Company.

10.2.1     Engagement Letter Agreement, dated November 18, 1992, between the
           Company and Batchelder & Partners, Inc. (incorporated by reference to
           Exhibit 10.4 to the S-1 Registration Statement).

10.2.2     Engagement Termination Letter Agreement, dated December 4, 1997,
           between the Company and Batchelder & Partners, Inc. (incorporated by
           reference to Exhibit 10.2.2 to the 1997 Form 10-K).

*10.3.1    Proprietary Information and Non-Competition Agreement, dated February
           9, 1993, for Robert D. Briskman (incorporated by reference to Exhibit
           10.8.1 to the S-1 Registration Statement).


Exhibit                            Description
- -------                            -----------
*10.3.2    Amendment No. 1 to Proprietary Information and Non Competition
           Agreement between the Company and Robert D. Briskman (incorporated by
           reference to Exhibit 10.8.2 to the S-1 Registration Statement.)

+10.4      Amended and Restated Contract, dated as of June 30, 1998, between the
           Company and Space Systems/Loral, Inc. (filed herewith).

10.5       Assignment of Technology Agreement, dated April 15, 1993, between
           Robert D. Briskman and the Company (incorporated by reference to
           Exhibit 10.10 to the S-1 Registration Statement).

*10.6.1    Amended and Restated Option Agreement between the Company and Robert
           D. Briskman (incorporated by reference to Exhibit 10.13 to the S-1
           Registration Statement).

*10.6.2    Stock Option Agreement, dated as of October 15, 1997, between the
           Company and Robert D. Briskman (incorporated by reference to Exhibit
           10.6.2 to the 1997 Form 10-K).

*10.7.1    Employment and Noncompetition Agreement between the Company and David
           Margolese (incorporated by reference to Exhibit 10.18.1 to the S-1
           Registration Statement).

*10.7.2    First Amendment to Employment Agreement between the Company and David
           Margolese (incorporated by reference to Exhibit 10.18.2 to the S-1
           Registration Statement).

*10.8.1    Employment and Noncompetition Agreement between the Company and
           Robert D. Briskman (incorporated by reference to Exhibit 10.19.1 to
           the S-1 Registration Statement).

*10.8.2    First Amendment to Employment Agreement between the Company and
           Robert D. Briskman (incorporated by reference to Exhibit 10.19.2 to
           the S-1 Registration Statement).
   
*10.8.3    Second Amendment to Employment Agreement between the Company and
           Robert D. Briskman (incorporated by reference to Exhibit 10.12.3 to
           the 1996 Form 10-K).
    
*10.9      Employment and Noncompetition Agreement, dated as of July 10, 1997,
           between the Company and Andrew J. Greenebaum (incorporated by
           reference to Exhibit 10.10 to the Company's Quarterly Report on Form
           10-Q for the period ended September 30, 1997).


Exhibit                            Description
- -------                            -----------
*10.10     Employment and Noncompetition Agreement, dated as of April 16, 1997,
           between the Company and Joseph S. Capobianco (incorporated by
           reference to Exhibit 10.17 to the Company's Quarterly Report on Form
           10-Q/A for the period ended March 31, 1997).

*10.11.1   Employment and Noncompetition Agreement, dated as of April 28, 1997,
           between the Company and Keno V. Thomas (incorporated by reference to
           Exhibit 10.18 to the Company's Quarterly Report on Form 10-Q/A for
           the period ended March 31, 1997).
   
* **10.11.2  Separation Agreement, dated as of July 6, 1998, between the Company
           and Keno V. Thomas.

* **10.12  Employment and Noncompetition Agreement, dated as of May 18, 1998,
           between the Company and Patrick L. Donnelly.
    
10.13      Registration Agreement, dated January 2, 1994, between the Company
           and M.A. Rothblatt and B.A. Rothblatt (incorporated by reference to
           Exhibit 10.20 to the S-1 Registration Statement).

*10.14     1994 Stock Option Plan (incorporated by reference to Exhibit 10.21 to
           the S-1 Registration Statement).

*10.15     Amended and Restated 1994 Directors' Nonqualified Stock Option Plan
           (incorporated by reference to Exhibit 10.22 to the Company's Annual
           Report on Form 10-K for the year ended December 31, 1995).

10.16.1    Option Agreement, dated as of October 21, 1992, between the Company
           and Batchelder & Partners, Inc. (incorporated by reference to Exhibit
           10.24 to the S-1 Registration Statement).
   
**10.16.2  Form of Option Agreement, dated as of December 29, 1997, between the
           Company and each Optionee.
    
10.17      Settlement Agreement, dated as of April 1, 1994, among the Company,
           M.A. Rothblatt, B.A. Rothblatt and Marcor, Inc. (incorporated by
           reference to Exhibit 10.27 to the S-1 Registration Statement).

*10.18     1995 Stock Compensation Plan (incorporated by reference to Exhibit
           10.37 to the Annual Report on Form 10-K for the year ended December
           31, 1995).

10.19.1    Preferred Stock Investment Agreement dated October 23, 1996 between
           the Company and certain investors (incorporated by reference to
           Exhibit 10.24 to the 1996 Form 10-K).

10.19.2    First Amendment to Preferred Stock Investment Agreement dated March
           7, 1997 between the Company and certain investors (incorporated by
           reference to Exhibit 10.24.1 to the 1996 Form 10-K).


Exhibit                            Description
- -------                            -----------
10.19.3    Second Amendment to Preferred Stock Investment Agreement dated March
           14, 1997 between the Company and certain investors (incorporated by
           reference to Exhibit 10.24.2 to the 1996 Form 10-K).

10.20      Stock Purchase Agreement, dated as of August 5, 1997, between the
           Company, David Margolese and Loral Space & Communications Ltd.
           (incorporated by reference to Exhibit 99.1 to the Company's Current
           Report on Form 8-K, filed with the Commission on August 19, 1997).
   
**10.21    Letter, dated May 29, 1998, terminating Launch Services Agreement
           dated July 22, 1997 between the Company and Arianespace S.A.;
           Arianespace Customer Loan Agreements dated July 22, 1997 for Launches
           #1 and #2 between the Company and Arianespace Finance S.A.; and the
           Multiparty Agreements dated July 22, 1997 for Launches #1 and #2
           among the Company, Arianespace S.A. and Arianespace Finance S.A.

**10.22    Credit Agreement, dated as of June 30, 1998, among the Company, the
           financial institutions from time to time parties thereto and Bank of
           America National Trust and Savings Association, as Administrative
           Agent.

**10.23    Pledge Agreement, dated as of June 30, 1998, made by the Company in
           favor of Bank of America National Trust and Savings Association, as
           Administrative Agent.
    
10.24      Summary Term Sheet/Commitment, dated June 15, 1997, among the Company
           and Everest Capital International, Ltd., Everest Capital Fund, L.P.
           and The Ravich Revocable Trust of 1989 (incorporated by reference to
           Exhibit 99.1 to the Company's Current Report on Form 8-K, filed with
           the Commission on July 8, 1997).

10.25.1    Engagement Letter Agreement, dated June 14, 1997, between the Company
           and Libra Investments, Inc. (incorporated by reference to Exhibit
           10.26.1 to the 1997 Form 10-K).
   
10.25.2    Engagement Termination Letter Agreement, dated August 6, 1997,
           between the Company and Libra Investments, Inc. (incorporated by
           reference to Exhibit 10.26.1 to the 1997 Form 10-K).
    
10.26      Engagement Letter Agreement dated October 8, 1997, between the
           Company and Merrill Lynch, Pierce, Fenner & Smith Incorporated
           (incorporated by reference to Exhibit 10.27 to the 1997 Form 10-K).


Exhibit                            Description
- -------                            -----------
+10.27     Radio License Agreement, dated January 21, 1998 between the Company
           and Bloomberg Communications Inc. (incorporated by reference to
           Exhibit 10.28 to the Company's Quarterly Report on Form 10-Q for the
           period ended March 31, 1998).

+10.28     Agreement, dated April 24, 1998, between Lucent Technologies Inc. and
           the Company (filed herewith).

**27.1     Financial Data Schedule.


*     This document has been identified as a management contract or compensatory
      plan or arrangement.

**    Previously filed.

+     Portions of these exhibits, which are incorporated by reference, have been
      omitted pursuant to an Application for Confidential treatment filed by the
      Company with the Securities and Exchange Commission pursuant to Rule 24b-2
      of the Securities Exchange Act of 1934, as amended.