content: <PAGE>
  
                         SECURITIES AND EXCHANGE COMMISSION
                              Washington, D. C.  20549
  
                                      FORM 8-K
  
                                   CURRENT REPORT
  
                       Pursuant to Section 13 or 15(d) of the
                          Securities Exchange Act of 1934
  
        Date of Report (Date of earliest event reported): November 12, 2000
  
                           ADAPTIVE BROADBAND CORPORATION
               (Exact name of registrant as specified in its charter)
  
                                      Delaware
                   (State or other jurisdiction of incorporation)
  
                  000-7428                            94-1668412
             (Commission File No.)         (IRS Employer Identification No.)
  
                                1143 BORREGAS AVENUE
                            SUNNYVALE, CALIFORNIA 94089
               (Address of principal executive offices and zip code)
  
         Registrant's telephone number, including area code: (408) 732-4000
  
                              _______________________
  <PAGE>
  
  Item 5.  Other Events
  
       This Current Report on Form 8-K contains forward-looking statements within
  the meaning of Section 27A of the Securities Act of 1933, as amended, and
  Section 21E of the Securities Exchange Act of 1934, as amended. The forward-
  looking statements contained herein involve risks and uncertainties, including
  those relating to the possible inability to complete the merger transaction
  involving Adaptive Broadband Corporation, a Delaware corporation ("Adaptive"),
  and Western Multiplex Corporation, a Delaware corporation ("Western Multiplex"),
  as scheduled, or at all, and those associated with the ability of the combined
  company to achieve the anticipated benefits of the merger. Actual results and
  developments may differ materially from those described or incorporated by
  reference in this Report.  For more information about Adaptive and risks arising
  when investing in Adaptive, investors are directed to daptive's most recent
  report on Form 10-K as filed with the Securities and Exchange Commission.
  
       On November 12, 2000, Adaptive entered into a definitive Agreement of
  Merger and Reorganization (the "Merger Agreement") with Western Multiplex and WA
  Merger Sub, Inc. ("Acquisition Sub").  Pursuant to the Merger Agreement,
  Acquisition Sub will be merged with and into Adaptive, which will survive as a
  wholly owned subsidiary of Western Multiplex (the "Merger").  The Merger is
  subject to, among other things, regulatory approval and the approval by
  Adaptive's and Western Multiplex's respective stockholders.  Upon completion of
  the Merger, each outstanding share of Adaptive common stock will be
  automatically converted into 1.345 shares of Western Multiplex common stock.
  The foregoing description of the Merger and the Merger Agreement is qualified in
  its entirety by reference to the full text of the Merger Agreement, and the
  related agreements which are attached to this report as Exhibits 2.1, 2.2, 2.3
  and 2.4.
  
       In connection with the execution of the Merger Agreement, Adaptive amended
  its stockholders' rights plan to provide, among other things, that no person or
  entity would be considered to be an "acquiring person" thereunder by reason of
  any transaction contemplated by the Merger Agreement.  The amendment to
  Adaptive's rights agreement, dated November 12, 2000, is attached hereto as
  Exhibit 4.1.
  
       The joint press release of Western Multiplex and Adaptive, dated November
  13, 2000, entitled "Western Multiplex and Adaptive Broadband Combining To Create
  A Broadband Wireless Powerhouse" is attached hereto as Exhibit 99.1.
  
  Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.
  
  (c)      Exhibits:
  
       2.1  Agreement and Plan of Merger and Reorganization, dated November 12,
            2000, by and among Adaptive Broadband Corporation, Western Multiplex
            Corporation and WA Merger Sub, Inc.
  
       2.2  Stock Option Agreement, dated November 12, 2000, between Adaptive
            Broadband Corporation and Western Multiplex Corporation.
  
                                        2.
  <PAGE>
  
       2.3  Stock Option Agreement, dated November 12, 2000, between Western
            Multiplex Corporation and Adaptive Broadband Corporation.
  
       2.4  Voting Agreement, dated November 12, 2000, between Adaptive Broadband
            Corporation and WMC Holding LLC.
  
       4.1  Amendment to Amended and Restated Rights Agreement, dated November 12,
            2000, between Adaptive Broadband Corporation and BankBoston, N.A.
  
       99.1 Press Release by Western Multiplex Corporation and Adaptive Broadband
            Corporation, dated November 13, 2000.
  
                                     SIGNATURE
  
       Pursuant to the requirements of the Securities Exchange Act of 1934, the
  registrant has duly caused this report to be signed on its behalf by the
  undersigned hereunto duly authorized.
  
                                     Adaptive Broadband Corporation
  
  Dated:  November 14, 2000          By:  /s/ Kenneth J. Wees
                                        ------------------------------
                                          Kenneth J. Wees
                                          Executive Vice President,
                                          General Counsel and Secretary
  
                                        3.
  <PAGE>
  
                                 INDEX TO EXHIBITS
  
  Exhibit
  Number   Description
  
  2.1      Agreement and Plan of Merger and Reorganization, dated November 12,
           2000, by and among Adaptive Broadband Corporation, Western Multiplex
           Corporation and WA Merger Sub, Inc.
  
  2.2      Stock Option Agreement, dated November 12, 2000, between Adaptive
           Broadband Corporation and Western Multiplex Corporation.
  
  2.3      Stock Option Agreement, dated November 12, 2000, between Western
           Multiplex Corporation and Adaptive Broadband Corporation.
  
  2.4      Voting Agreement, dated November 12, 2000, between Adaptive Broadband
           Corporation and WMC Holding LLC.
  
  4.1      Amendment to Amended and Restated Rights Agreement, dated November 12,
           2000, between Adaptive Broadband Corporation and BankBoston, N.A.
  
  99.1     Press Release by Western Multiplex Corporation and Adaptive Broadband
           Corporation, dated November 13, 2000.
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text: SECURITIES AND EXCHANGE COMMISSION
                              Washington, D. C.  20549
  
                                      FORM 8-K
  
                                   CURRENT REPORT
  
                       Pursuant to Section 13 or 15(d) of the
                          Securities Exchange Act of 1934
  
        Date of Report (Date of earliest event reported): November 12, 2000
  
                           ADAPTIVE BROADBAND CORPORATION
               (Exact name of registrant as specified in its charter)
  
                                      Delaware
                   (State or other jurisdiction of incorporation)
  
                  000-7428                            94-1668412
             (Commission File No.)         (IRS Employer Identification No.)
  
                                1143 BORREGAS AVENUE
                            SUNNYVALE, CALIFORNIA 94089
               (Address of principal executive offices and zip code)
  
         Registrant's telephone number, including area code: (408) 732-4000
  
                              _______________________
  Item 5.  Other Events
  
       This Current Report on Form 8-K contains forward-looking statements within
  the meaning of Section 27A of the Securities Act of 1933, as amended, and
  Section 21E of the Securities Exchange Act of 1934, as amended. The forward-
  looking statements contained herein involve risks and uncertainties, including
  those relating to the possible inability to complete the merger transaction
  involving Adaptive Broadband Corporation, a Delaware corporation ("Adaptive"),
  and Western Multiplex Corporation, a Delaware corporation ("Western Multiplex"),
  as scheduled, or at all, and those associated with the ability of the combined
  company to achieve the anticipated benefits of the merger. Actual results and
  developments may differ materially from those described or incorporated by
  reference in this Report.  For more information about Adaptive and risks arising
  when investing in Adaptive, investors are directed to daptive's most recent
  report on Form 10-K as filed with the Securities and Exchange Commission.
  
       On November 12, 2000, Adaptive entered into a definitive Agreement of
  Merger and Reorganization (the "Merger Agreement") with Western Multiplex and WA
  Merger Sub, Inc. ("Acquisition Sub").  Pursuant to the Merger Agreement,
  Acquisition Sub will be merged with and into Adaptive, which will survive as a
  wholly owned subsidiary of Western Multiplex (the "Merger").  The Merger is
  subject to, among other things, regulatory approval and the approval by
  Adaptive's and Western Multiplex's respective stockholders.  Upon completion of
  the Merger, each outstanding share of Adaptive common stock will be
  automatically converted into 1.345 shares of Western Multiplex common stock.
  The foregoing description of the Merger and the Merger Agreement is qualified in
  its entirety by reference to the full text of the Merger Agreement, and the
  related agreements which are attached to this report as Exhibits 2.1, 2.2, 2.3
  and 2.4.
  
       In connection with the execution of the Merger Agreement, Adaptive amended
  its stockholders' rights plan to provide, among other things, that no person or
  entity would be considered to be an "acquiring person" thereunder by reason of
  any transaction contemplated by the Merger Agreement.  The amendment to
  Adaptive's rights agreement, dated November 12, 2000, is attached hereto as
  Exhibit 4.1.
  
       The joint press release of Western Multiplex and Adaptive, dated November
  13, 2000, entitled "Western Multiplex and Adaptive Broadband Combining To Create
  A Broadband Wireless Powerhouse" is attached hereto as Exhibit 99.1.
  
  Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.
  
  (c)      Exhibits:
  
       2.1  Agreement and Plan of Merger and Reorganization, dated November 12,
            2000, by and among Adaptive Broadband Corporation, Western Multiplex
            Corporation and WA Merger Sub, Inc.
  
       2.2  Stock Option Agreement, dated November 12, 2000, between Adaptive
            Broadband Corporation and Western Multiplex Corporation.
  
                                        2.
  2.3  Stock Option Agreement, dated November 12, 2000, between Western
            Multiplex Corporation and Adaptive Broadband Corporation.
  
       2.4  Voting Agreement, dated November 12, 2000, between Adaptive Broadband
            Corporation and WMC Holding LLC.
  
       4.1  Amendment to Amended and Restated Rights Agreement, dated November 12,
            2000, between Adaptive Broadband Corporation and BankBoston, N.A.
  
       99.1 Press Release by Western Multiplex Corporation and Adaptive Broadband
            Corporation, dated November 13, 2000.
  
                                     SIGNATURE
  
       Pursuant to the requirements of the Securities Exchange Act of 1934, the
  registrant has duly caused this report to be signed on its behalf by the
  undersigned hereunto duly authorized.
  
                                     Adaptive Broadband Corporation
  
  Dated:  November 14, 2000          By:  /s/ Kenneth J. Wees
                                        ------------------------------
                                          Kenneth J. Wees
                                          Executive Vice President,
                                          General Counsel and Secretary
  
                                        3.
  INDEX TO EXHIBITS
  
  Exhibit
  Number   Description
  
  2.1      Agreement and Plan of Merger and Reorganization, dated November 12,
           2000, by and among Adaptive Broadband Corporation, Western Multiplex
           Corporation and WA Merger Sub, Inc.
  
  2.2      Stock Option Agreement, dated November 12, 2000, between Adaptive
           Broadband Corporation and Western Multiplex Corporation.
  
  2.3      Stock Option Agreement, dated November 12, 2000, between Western
           Multiplex Corporation and Adaptive Broadband Corporation.
  
  2.4      Voting Agreement, dated November 12, 2000, between Adaptive Broadband
           Corporation and WMC Holding LLC.
  
  4.1      Amendment to Amended and Restated Rights Agreement, dated November 12,
           2000, between Adaptive Broadband Corporation and BankBoston, N.A.
  
  99.1     Press Release by Western Multiplex Corporation and Adaptive Broadband
           Corporation, dated November 13, 2000.