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                                                                     EXHIBIT 4.3

                           WINK COMMUNICATIONS, INC.


                            CONSENT AND AMENDMENT OF
                INVESTOR RIGHTS AGREEMENT AND CO-SALE AGREEMENT


         This Consent and Amendment of Investor Rights Agreement is effective as
of May 26, 2000 by and among Wink Communications, Inc. (the "Company"), EchoStar
Communications Corporation ("EchoStar"), and those stockholders of the Company
(the "Existing Investors") who are parties to the Fourth Amended and Restated
Investor Rights Agreement dated as of June 30, 1999 (the "Rights Agreement").

         WHEREAS, the Board of Directors of the Company has determined it to be
in the best interests of the Company and its stockholders to issue to EchoStar a
warrant to purchase 1,300,000 shares of Common Stock (the "EchoStar Warrant") in
connection with the entering into of the Master Agreement dated May 26, 2000
between the Company and EchoStar;

         WHEREAS, the Company desires and the Board of Directors has determined
that it is in the best interests of the Company and its stockholders to grant to
EchoStar certain registration rights in connection with the EchoStar Warrant;

         WHEREAS, in order to grant registration rights in connection with the
EchoStar Shares, the Company wishes to amend the terms of the Rights Agreement;

         WHEREAS, Section 5.2 of the Rights Agreement provides for waiver,
modification or amendment of certain provisions therein with the written
approval of the holders of a majority of the Registrable Securities (as defined
in the Rights Agreement);

         NOW, THEREFORE, the parties agree as follows:

         1. GRANT OF RIGHTS AND AMENDMENT OF AGREEMENTS. The Company hereby
grants to EchoStar, and each Existing Investor hereby consents to such grant, in
connection with the issuance of the EchoStar Shares, all registration rights
granted to the "Investors" (as defined in the Rights Agreement) under the
Section 2 of the Rights Agreement and the new registration right described in
paragraph 3 hereof. Furthermore, the Rights Agreement is hereby amended such
that EchoStar shall be treated as an "Investor" and "Holder" thereunder with
respect to the EchoStar Shares for all purposes of Section 2, as amended hereby.
In particular, EchoStar's rights shall not be subordinate under Section 2.7 of
the Rights Agreement to the rights of any other Holder under the Rights
Agreement.

         2. CONSENT TO AMEND, AND AMENDMENT OF, SECTION 1.1 OF THE RIGHTS
AGREEMENT.

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         (a) The Company and the Existing Investors hereby consent to the
addition of a definition of "EchoStar Warrant" to Section 1.1 of the Rights
Agreement, and acknowledge that the execution of this Consent and Amendment by
the holders of a majority of the Registrable Securities (as defined in the
Rights Agreement) shall amend the Rights Agreement, as follows:

                           "EchoStar Warrant" shall mean the warrant to
         purchase 1,300,000 shares of Common Stock (subject to appropriate
         adjustment in the event of any stock split, dividends, recombinations,
         recapitalizations and the like) issued or to be issued to EchoStar,
         Inc. pursuant to the Master Agreement dated May 26, 2000 between the
         Company and EchoStar.

         3. The Company and the Existing Investors hereby consent to the
amendment of the definition of "Registrable Securities" contained in Section 1.1
of the Rights Agreement, and agree that the execution of this Consent and
Amendment by the holders of a majority of the Registrable Securities (as
currently defined in the Rights Agreement) shall amend such definition by
changing phrase "the Thomson Warrant and the Vulcan Warrant" at the end of
clause (iv) to read "the Thomson Warrant, the EchoStar Warrant and the Vulcan
Warrant. CONSENT TO ADD, AND ADDITION OF, NEW SECTION 2.6A. The Company and the
Existing Investors hereby consent to the addition of a new Section 2.6A to the
Rights Agreement, and acknowledge that the execution of this Consent and
Amendment by the holders of a majority of the Registrable Securities (as defined
in the Rights Agreement) shall amend the Rights Agreement, which new section
shall grant EchoStar certain additional rights to request registration of the
shares of Common Stock issuable upon exercise of the EchoStar Warrant as
follows:

                  2.6A     REGISTRATION ON FORM S-3 FOR ECHOSTAR.

                           (a) Commencing on August 21, 2000, EchoStar may
                  request that the Company file a registration statement on Form
                  S-3 (or any successor form to Form S-3) for a public offering
                  of shares of the Registrable Securities held by EchoStar,
                  provided that the reasonably anticipated aggregate offering
                  price to the public of which, net of underwriting discounts
                  and commissions, would exceed $1,000,000, and provided further
                  that the Company is a registrant entitled to use Form S-3 to
                  register the Registrable Securities for such an offering. If
                  EchoStar makes such a request, the Company shall use diligent
                  efforts to cause such Registrable Securities to be registered
                  for such offering on such form within sixty (60) days of
                  Echostar's request, and to cause such Registrable Securities
                  to be qualified in such jurisdictions as the Holder or Holders
                  may reasonably request; provided, however, that the Company
                  shall not be required to effect more than one registration
                  pursuant to this Section 2.6A in any six (6) month period or
                  in excess of three registrations under this Section 2.6A. The
                  substantive provisions of Section 2.4(b) shall be applicable
                  to each registration initiated under this Section 2.6A.

                           (b) Notwithstanding the foregoing, the Company shall
                  not be obligated to take any action pursuant to this Section
                  2.6A: (i) in any particular jurisdiction in

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                  which the Company would be required to execute a general
                  consent to service of process in effecting such registration,
                  qualification or compliance unless the Company is already
                  subject to service in such jurisdiction and except as may be
                  required by the Securities Act; (ii) if the Company, within
                  ten (10) days of the receipt of EchoStar's request, gives
                  notice of its bona fide intention to effect the filing of a
                  registration statement with the Commission within ninety (90)
                  days of receipt of such request (other than with respect to a
                  registration statement relating to a Rule 145 transaction, an
                  offering solely to employees or any other registration which
                  is not appropriate for the registration of Registrable
                  Securities); (iii) during the period starting with the date
                  sixty (60) days prior to the Company's estimated date of
                  filing of, and ending on the date six (6) months immediately
                  following, the effective date of any registration statement
                  pertaining to securities of the Company (other than a
                  registration of securities in a Rule 145 transaction or with
                  respect to an employee benefit plan), provided that the
                  Company is actively employing in good faith all reasonable
                  efforts to cause such registration statement to become
                  effective; or (iv) if the Company shall furnish to EchoStar a
                  certificate signed by the President of the Company stating
                  that in the good faith judgment of the Board of Directors it
                  would be seriously detrimental to the Company or its
                  shareholders for registration statements to be filed in the
                  near future, in which case the Company's obligation to use its
                  best efforts to file a registration statement shall be
                  deferred for a period not to exceed one hundred twenty (120)
                  days from the receipt of the request to file such registration
                  by EchoStar.

         4. CONSENT TO GRANT RIGHTS. The Existing Investors hereby consent to
grant EchoStar, in connection with the EchoStar Warrant, all registration other
rights under Section 2 of the Rights Agreement to which the Existing Investors
are currently entitled under such agreements.

                  [Remainder of Page Intentionally Left Blank]

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         5.  COUNTERPARTS.  This Waiver may be signed in any number of
counterparts, each of which shall constitute an original and all of which
together shall constitute one instrument.


COMPANY                                INVESTOR

WINK COMMUNICATIONS, INC.
                                       ----------------------------------------
                                       Print Name of Investor



By:                                    By:
      --------------------------            -----------------------------------
                                            (Signature of Authorized Person)


Title:                                 Title:
       -------------------------              ---------------------------------



ECHOSTAR COMMUNICATIONS CORPORATION



By:
      --------------------------


Title:
       -------------------------

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