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):  March 15, 2001
  
  
                          ADAPTIVE BROADBAND CORPORATION
              (Exact name of registrant as specified in its charter)
  
  
                                     Delaware
                             (State 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.
  
        Adaptive Broadband Corporation announced today that it expects to restate
  its revenue and cost of revenue for the quarter ended June 30, 2000. The
  Company's press release dated March 15, 2001, entitled "Adaptive Broadband
  Announces Planned Restatement of June 2000 Quarter Results," is attached hereto
  as Exhibit 99.1.
  
  Item 7.  Exhibits.
  
           (c)  Exhibits.
  
                 99.1         Press Release, dated as of March 15, 2001,
                              entitled "Adaptive Broadband(TM) Announces Planned
                              Restatement of June 2000 Quarter Results."
  
  
  
                                        1
  <PAGE>
  
                                     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, thereunto duly authorized.
  
  
                                      Adaptive Broadband Corporation
  
  
  Dated:  March 19, 2001              By:  /s/  Kenneth J. Wees
                                         -------------------------------
                                         Kenneth J. Wees
                                         Vice President, General Counsel
                                         and Secretary
  
  
                                        2
  <PAGE>
  
                                 INDEX TO EXHIBITS
  
  
  99.1      Press Release, dated as of June 24, 1999 entitled "Adaptive
            Broadband(TM) Announces Planned Restatement of June 2000 Quarter
            Results."
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metadata_filer: {"company-data": {"conformed-name": "ADAPTIVE BROADBAND CORP", "cik": "0000016357", "assigned-sic": "3663", "irs-number": "941668412", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-07428", "film-number": "1571775"}, "business-address": {"street1": "1143 BORREGAS AVE", "city": "SUNNYVALE", "state": "CA", "zip": "94089", "phone": "4087324000"}, "mail-address": {"street1": "ADAPTIVE BROADBAND CORPORATION", "street2": "1143 BORREGAS AVE", "city": "SUNNYVALE", "state": "CA", "zip": "94089"}, "former-company": {"former-conformed-name": "CALIFORNIA MICROWAVE INC", "date-changed": "19920703"}}
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):  March 15, 2001
  
                          ADAPTIVE BROADBAND CORPORATION
              (Exact name of registrant as specified in its charter)
  
                                     Delaware
                             (State 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.
  
        Adaptive Broadband Corporation announced today that it expects to restate
  its revenue and cost of revenue for the quarter ended June 30, 2000. The
  Company's press release dated March 15, 2001, entitled "Adaptive Broadband
  Announces Planned Restatement of June 2000 Quarter Results," is attached hereto
  as Exhibit 99.1.
  
  Item 7.  Exhibits.
  
           (c)  Exhibits.
  
                 99.1         Press Release, dated as of March 15, 2001,
                              entitled "Adaptive Broadband(TM) Announces Planned
                              Restatement of June 2000 Quarter Results."
  
                                        1
  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, thereunto duly authorized.
  
                                      Adaptive Broadband Corporation
  
  Dated:  March 19, 2001              By:  /s/  Kenneth J. Wees
                                         -------------------------------
                                         Kenneth J. Wees
                                         Vice President, General Counsel
                                         and Secretary
  
                                        2
  INDEX TO EXHIBITS
  
  99.1      Press Release, dated as of June 24, 1999 entitled "Adaptive
            Broadband(TM) Announces Planned Restatement of June 2000 Quarter
            Results."