EXHIBIT 4.18

                                  SPECIMEN OF
                        PREFERRED SECURITY CERTIFICATE


     This Preferred Security Certificate is a Global Certificate within the
meaning of the Declaration hereinafter referred to and is registered in the name
of The Depository Trust Company (the "Depository") or a nominee of the
Depository.  This Preferred Security Certificate is exchangeable for Preferred
Securities registered in the name of a person other than the Depository or its
nominee only in the limited circumstances described in the Declaration and no
transfer of this Preferred Security Certificate (other than a transfer of this
Preferred Security Certificate as a whole by the Depository to a nominee of the
Depository or by a nominee of the Depository to the Depository or another
nominee of the Depository) may be registered except in limited circumstances.

     Unless this Preferred Security Certificate is presented by an authorized
representative of the Depository to the Trust or its agent for registration of
transfer, exchange or payment, and any Preferred Security Certificate issued is
registered in the name of Cede & Co. or such other name as requested by an
authorized representative of the Depository (and any payment hereon is made to
Cede & Co. or to such other entity as is requested by an authorized
representative of the Depository), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL since the registered owner
hereof, Cede & Co., has an interest herein.

Certificate Number                              Number of Preferred Securities
- -1-                                                              -20,000,000-
                             CUSIP NO. [         ]

                  Certificate Evidencing Preferred Securities
                                      of
                           MOTOROLA CAPITAL TRUST I

           6.68% Trust Originated Preferred Securities(SM) ("TOPrS"(SM))

                (liquidation amount $25 per Preferred Security)

     MOTOROLA CAPITAL TRUST I, a statutory business trust formed under the laws
of the State of Delaware (the "Trust"), hereby certifies that Cede & Co. (the
"Holder") is the registered owner of Twenty Million (20,000,000) preferred
securities of the Trust representing undivided beneficial interests in the
assets of the Trust designated the 6.68% Trust Originated Preferred SecuritiesSM
(liquidation amount $25 per Preferred Security) (the "Preferred Securities").
The Preferred Securities are transferable on the books and records of the Trust,
in person or by a duly authorized attorney, upon surrender of this certificate
duly endorsed and in proper form for transfer.  The designation, rights,
privileges, restrictions, preferences and other terms and provisions of the
Preferred Securities represented hereby are issued and shall in all respects be
subject to the provisions of the Amended and Restated Declaration of Trust of
the Trust dated as of February 3, 1999, as the same may be amended from time to
time (the "Declaration"), including the designation of the terms of the
Preferred Securities as set forth in Annex I to the Declaration.  Capitalized
terms used herein but not defined herein shall have the respective meanings
given them in the Declaration.  The Holder is entitled to the benefits of the
Preferred Securities Guarantee to the extent provided therein.  The Sponsor will
provide a copy of the Declaration, the Preferred Securities Guarantee and the
Indenture to the Holder without charge upon written request to the Sponsor at
its principal place of business.

     Upon receipt of this certificate,  the Holder is bound by the Declaration
and is entitled to the benefits thereunder.

     By acceptance, the Holder agrees to treat, for United States federal income
tax purposes, the Debentures as indebtedness and the Preferred Securities as
evidence of indirect beneficial ownership in the Debentures.

     IN WITNESS WHEREOF, the Trust has executed this Preferred Securities
Certificate this 3rd day of February, 1999.

                            MOTOROLA CAPITAL TRUST I

                              By:
                                 -----------------------------                 
                              Name:
                              Title:

 
     Distributions payable on each Preferred Security will be fixed at a rate
per annum of 6.68% (the "Coupon Rate") of the stated liquidation amount of $25
per Preferred Security, such rate being the rate of interest payable on the
Debentures to be held by the Property Trustee.  Distributions in arrears for
more than one quarter will bear interest thereon compounded quarterly at the
Coupon Rate (to the extent permitted by applicable law).  The term
"Distributions" as used herein includes such cash distributions and any such
interest payable unless otherwise stated.  A Distribution is payable only to the
extent that payments are made in respect of the Debentures held by the Property
Trustee and to the extent the Property Trustee has funds available therefor.
The amount of Distributions payable for any period will be computed for any full
quarterly Distribution period on the basis of a 360-day year of twelve 30-day
months, and for any period shorter than a full quarterly Distribution period for
which Distributions are computed, Distributions will be computed on the basis of
the actual number of days elapsed per 90-day quarter.

     Except as otherwise described below, distributions on the Preferred
Securities will be cumulative, will accrue from the date of original issuance
and will be payable quarterly in arrears, on March 31, June 30, September 30 and
December 31 of each year, commencing on March 31, 1999, which payment dates
shall correspond to the interest payment dates on the Debentures.  The Debenture
Issuer has the right under the Indenture to defer payments of interest by
extending the interest payment period from time to time on the Debentures for a
period not exceeding 20 consecutive quarters or extending beyond the Maturity
Date of the Debentures (each, an "Extension Period") and, as a consequence of
any such deferral, Distributions will also be deferred.  Despite such deferral,
quarterly Distributions will continue to accrue with interest thereon (to the
extent permitted by applicable law) at the Coupon Rate compounded quarterly
during any such Extension Period.  Prior to the termination of any such
Extension Period, the Debenture Issuer may further extend such Extension Period;
provided that such Extension Period together with all such previous and further
extensions thereof may not exceed 20 consecutive quarters and may not extend
beyond the Maturity Date of the Debentures.  Payments of accrued Distributions
will be payable to Holders as they appear on the books and records of the Trust
on the record date after the end of the Extension Period.  Upon the termination
of any Extension Period and the payment of all amounts then due, the Debenture
Issuer may commence a new Extension Period, subject to the above requirements.

     The Preferred Securities shall be redeemable as provided in the
Declaration.

                                  ASSIGNMENT

     FOR VALUE RECEIVED,  the undersigned assigns and transfers this Preferred
Security Certificate to:

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                   (Insert assignee's social security or tax
                            identification number)

 -------------------------------------------------------------------------------
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                        (Insert address and zip code of assignee)

and irrevocably appoints _______________________________________________________
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                   agent to transfer this Preferred Security Certificate on the
books of the Trust. The agent may substitute another to act for him or her.

Date:_________________

                                 Signature:__________________

    (Sign exactly as your name appears on the other side of this Preferred
                             Security Certificate)

                                       2