EXHIBIT 99.2
                           MEMORANDUM OF UNDERSTANDING


             This Memorandum of Understanding is between Digital Radio, L.L.C.
("Digital Radio") and Nextel Communications,  Inc. ("Nextel"), and is dated as
of April 11, 1997.

I.       Current Status.

         A. Digital Radio has the right,  pursuant to an Option  Agreement dated
as of July 28,  1995,  to  purchase up to 15 million  shares of common  stock of
Nextel at an exercise price of $15.50 per share ("Option").

         B.       The Option described above must be exercised on or before
6:00 p.m. New York local time, July 28, 1997.

         C.       The total price for the Nextel shares to be acquired upon
exercise of the Option, at the relevant exercise price of $15.50 per share, is
$232,500,000.

II.      Option Exercise Transaction.

         A. Digital Radio  commits to exercise its Option to purchase  shares in
Nextel  from  Nextel to the extent of a total  purchase  price of  $232,500,000.
Notwithstanding that Digital Radio's commitment shall be fixed as of the date of
the comprehensive documentation contemplated by Section V hereof, closing of the
Option exercise and transfer of funds shall occur on Monday,  July 28, 1997 (the
"Closing").

         B. In  consideration  of Digital Radio's early exercise  commitment set
forth in the foregoing  paragraph A, Nextel will enter into a Contingent  Equity
Instrument ("CEI") and issue and deliver,  in exchange for a cash payment of One
Hundred  Sixty-One Dollars  ($161.00),  such CEI to Digital Radio at the time of
execution  and  delivery  of the  comprehensive  documentation  contemplated  by
Section V hereof. The CEI will provide



that it shall be  convertible,  at Digital  Radio's  election  at any time at or
after the Option  exercise and transfer of funds  contemplated  in the foregoing
paragraph A until July 28, 1999, without the payment of any additional amount by
Digital Radio, into a number of fully paid and  non-assessable  shares of Nextel
common stock given by the formula shown on Annex A attached hereto.

         C. The purchase  price for each share of Nextel  common stock  acquired
pursuant to exercise of the Option at the Closing shall be $15.50,  resulting in
an issuance of 15,000,000 Nextel shares to, and the payment of an aggregate cash
purchase price of $232,500,000 by, Digital Radio at the Closing.

         D.  The   transactions   contemplated  by  this  Section  II  shall  be
conditioned upon Nextel  obtaining the required  consents of the holders of each
outstanding  issue of Nextel's  public notes (the  "Notes") to amendments to the
indentures  governing the Notes (the  "Indentures")  that would permit Nextel to
incur  additional  borrowings.  Such amendments shall be on terms and conditions
reasonably  satisfactory  to Digital  Radio and shall allow  Nextel (i) to incur
debt  evidenced by  unsecured  notes issued on or prior to December 31, 1997 for
which Nextel will receive gross  proceeds of up to $350  million,  (ii) to incur
additional  debt in an  aggregate  amount  up to two  times  the  aggregate  net
proceeds  received by Nextel  from the  issuance  of certain  qualifying  equity
securities  (excluding the proceeds  received in connection with the exercise by
Digital Radio of the Option),  and (iii) to incur certain additional  categories
of permitted debt in an aggregate amount of up to $2.5 billion.

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III.     Concurrent Undertakings

                  A.  Digital  Radio  will  agree to lend up to  $50,000,000  to
Nextel,  in  satisfaction of the related  condition  pertaining to the Tranche E
Senior Secured Loans referred to in that certain Term Sheet for Debt  Financing,
dated as of March 26, 1997,  between  Nextel and  Motorola,  Inc.  ("Motorola"),
filed as Exhibit  10.37 to  Nextel's  Form 10-K Report for the Fiscal Year ended
December 31, 1996 (the  "Motorola Term Sheet"),  under the following  conditions
(and any other  conditions  applicable  to the  Tranche E Senior  Secured  Loans
referred to in the Motorola Term Sheet):

                  1. The loan facility will parallel the terms and
conditions of the Motorola Tranche E Senior Secured Loan facility in the amount
of $200,000,000;

                  2. Digital Radio will receive (on the date of the first dollar
drawdown of such loan and  regardless of the amount of the drawdown or the total
drawdown)  warrants  to purchase  250,000  shares of Nextel  common  stock at an
exercise  price equal to the average of the closing  prices for Nextel shares on
the NASDAQ on each of the 20 days  preceding  the first  dollar  drawdown of the
loan  and  with  an  expiration  date  five  years  from  the  date  thereof  in
consideration of the financing;
                  3. Digital Radio debt will rank pari passu with the Motorola
Tranche E Senior Secured debt;
                  4. Nextel will exercise its good faith, best efforts to locate
an investor or investors to contribute at least an  additional  $400,000,000  of
equity. The amount of the Digital Radio landing commitment is reduced by $20 for
every $100 of equity  raised by Nextel.  For  purposes of the first  sentence of
this subparagraph  A.4., all equity proceeds received by Nextel upon issuance of
its equity  securities shall be counted toward such $400 million objective other
than equity proceeds received in respect of exercises by (i)

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Digital  Radio of the options for an  aggregate  of 35 million  shares of Nextel
common  stock  held by  Digital  Radio  on the date  hereof  (the  "Existing  DR
Options")  and (ii) by Motorola or its assignees of the options for an aggregate
of 3 million  shares of Nextel  Common  Stock  originally  issued to Motorola in
connection with the equipment purchase and financing arrangements between Nextel
and Motorola  entered in to in 1991 ("Motorola  Options").  For purposes of this
subparagraph  A.4, all equity proceeds received from Digital Radio or any of its
controlled or controlling affiliates,  upon exercise of the Existing DR Options,
and any equity proceeds  received upon exercise of the Motorola Options from any
controlling  or  controlled  affiliates  of  Motorola,  shall not be taken  into
account in reducing the lending commitment of Digital Radio hereunder.

                  5.       No drawdown is permitted outside the commitment
period applicable to the Motorola Tranche E Senior Secured Loans.

                  6.       No Digital Radio financing is required unless prior
to drawdown:

                  a.       All bank financing under current $1.655 billion
credit arrangement must be fully drawn down;

                  b.       All debt under the current $345 million Vendor
Financing Agreement must be fully drawn down;

                  c.       Nextel must borrow an additional $250 million under
the Amended Credit Agreement;

                  d.       Motorola must provide an additional $50 million of
financing under the Amended Vendor Financing Agreement;

                  e.   Nextel must borrow all of Tranche D financing $200
million from Motorola;

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                  f.       Nextel must access capital markets for an additional
$250 million of high-yield debt;

                  g.       All other terms and conditions will be consistent
with the Motorola Tranche E loan.

                  7.       The parties recognize that certain actions involving
Digital Radio and/or its controlled or controlling affiliates (including without
limitation, Digital Radio's  designees to the Nextel Board, in their capacities
as directors and as members of any Board  Committee) may be required or
contemplated  to satisfy or bring about the  satisfaction  of certain
conditions to the Motorola Tranche E Senior  Secured  Loan  Financing  and/or
the related $50 million  Digital  Radio Financing.  It is  understood  that,
to the extent such conditions are not satisfied by reason of any action or
failure to act on the part of Digital Radio or such  controlling or controlled
affiliates  thereof,  Digital Radio shall be deemed to have waived satisfaction
of such conditions as they relate to Digital Radio's  obligation to provide the
$50 million of debt  financing  contemplated above.

IV. Additional Condition for Digital Radio Undertakings.

         The  Lock-Up  Period  provided  in  Section  8.3(g)  of the  Securities
Purchase Agreement shall terminate as of the Closing.

V.       Future Documentation.

         The parties hereto and their  respective  representatives  and advisors
will use their best  efforts in good faith to prepare and  finalize  appropriate
definitive documentation as soon as is practicable to implement the undertakings
and related  matters  contemplated  by this  Memorandum of  Understanding.  Such
definitive  documentation shall be in all respects consistent with the terms and
conditions  set forth herein,  shall contain  representations  and warranties as
indicated in Section IV below and such other

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representations, warranties, covenants and other terms and conditions as are
customary and appropriate for transactions of this type and otherwise shall be
reasonably acceptable to each of the parties.  The parties each shall use their
respective best efforts in good faith to obtain all necessary governmental,
judicial and third party consents required to implement any of the matters
contemplated herein, and agree that such parties' mutual objective is enter
into definitive documentation (subject to the matters discussed above) as soon
as is practicable.

VI.      Representations and Warranties

         A. Nextel shall make  reasonable  representations  and warranties as to
the current status of its business and as to other matters reasonably  requested
by Digital Radio; no such  representations and warranties (other than on "basic"
matters,  such  as  due  incorporation,   due  authorization  and  execution  of
definitive documents,  number and type of authorized shares of capital stock and
the like) shall be "brought down" to Closing.

         B.       Digital Radio shall make representations as to its authority
and power, and such other representations as may reasonably be requested by
Nextel.

         C.       The final documentation shall provide that, assuming
compliance with any relevant federal or state securities and antitrust laws,
the option exercise commitment of Digital Radio set forth in Section I. hereof
and the lending commitment of Digital Radio set forth in Section III.A. hereof
(as to the latter, subject to the conditions set forth in the final
documentation as contemplated in Section III.A.), shall be irrevocable and

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unconditional,  and  shall  not be  subject  to the need to seek or  obtain  any
consent or approval of, or to make any notice to or filing with, any third party
or any governmental agency, court or similar governmental or judicial body.

                             NEXTEL COMMUNICATIONS, INC.


                             By: /s/Steven Shindler
                             Its: Steven Shindler, Senior Vice President & CFO


                             DIGITAL RADIO, L.L.C.


                             By: /s/Dennis Weibling
                             Its: President

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                                                                    ANNEX A
                                                   [TO EARLY COMMITMENT MOU]


         The contingent  Exercise Instrument ("CEI") shall be exchangeable for a
number of shares of Nextel Common Stock ("N")  determined in accordance with the
following formula:

         (a)      if X is $14.00 or less, N equals 1,607,143 shares;

         (b)      if X is $15.50 or more, N equals zero shares; and

         (c)      in any other case, N equals the number of shares resulting
                  from the equation [D multiplied by 15,000,000], divided by X,

where X is the average  closing  price for a share of Nextel Common Stock on the
NASD-National  Market during the 20 trading days immediately  preceding the date
of the Closing,  and D is the result of  subtracting  X from  $15.50.  By way of
example, if X is $14.50, then N (determined in accordance with clause (c) above)
would be 1,034,483  shares  (rounded up to the nearest  whole share) i.e.,  1.00
times 15,000,000 = 15,000,000 DIVIDED BY 14.50 = 1,034,482.76