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 21, 2001
  
                                AB Liquidating Corp.
               (Exact name of registrant as specified in its charter)
  
                                      Delaware
                              (State of incorporation)
  
        000-07428                                          94-1668412
  (Commission File No.)                          (IRS Employer Identification No.)
  
                            2055 GATEWAY PLACE, SUITE 400
                             SAN JOSE, CALIFORNIA 95110
                (Address of principal executive offices and zip code)
  
  
         Registrant's telephone number, including area code: (408) 451-3940
  
                           Adaptive Broadband Corporation
                                   (Former Name)
  
                            ---------------------------
  
  <PAGE>
  
  Item 5.    Other Events.
  
       Adaptive Broadband Corporation, Debtor and Debtor in Possession, has
  submitted a Chapter 11 Monthly Operating Report (General Business Case) for the
  month ended October 27, 2001 in the matter In re Adaptive Broadband Corporation
  (Case No. 01-53685 ASW) in the U.S. Bankruptcy Court, Northern District of
  California, San Jose Division. The Monthly Operating Report for the month ended
  October 27, 2001, dated November 20, 2001 is attached hereto as Exhibit 99.1.
  
  Item 7.    Exhibits.
  
       99.1   Monthly Operating Report for the month ended October 27, 2001, dated
              November 20, 2001.
  
  <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:  November 30, 2001                  By:      /s/ Elias Nader
                                                 ---------------------------------
                                                          Elias Nader
                                                          Secretary
  
  <PAGE>
  
                                  INDEX TO EXHIBITS
  
  
  Exhibit
  Number           Description
  -------          -----------
   99.1            Monthly Operating Report for the month ended October 27, 2001,
                   dated November 20, 2001.
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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": "1805176"}, "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): November 21, 2001
  
                                AB Liquidating Corp.
               (Exact name of registrant as specified in its charter)
  
                                      Delaware
                              (State of incorporation)
  
        000-07428                                          94-1668412
  (Commission File No.)                          (IRS Employer Identification No.)
  
                            2055 GATEWAY PLACE, SUITE 400
                             SAN JOSE, CALIFORNIA 95110
                (Address of principal executive offices and zip code)
  
         Registrant's telephone number, including area code: (408) 451-3940
  
                           Adaptive Broadband Corporation
                                   (Former Name)
  
                            ---------------------------
  Item 5.    Other Events.
  
       Adaptive Broadband Corporation, Debtor and Debtor in Possession, has
  submitted a Chapter 11 Monthly Operating Report (General Business Case) for the
  month ended October 27, 2001 in the matter In re Adaptive Broadband Corporation
  (Case No. 01-53685 ASW) in the U.S. Bankruptcy Court, Northern District of
  California, San Jose Division. The Monthly Operating Report for the month ended
  October 27, 2001, dated November 20, 2001 is attached hereto as Exhibit 99.1.
  
  Item 7.    Exhibits.
  
       99.1   Monthly Operating Report for the month ended October 27, 2001, dated
              November 20, 2001.
  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:  November 30, 2001                  By:      /s/ Elias Nader
                                                 ---------------------------------
                                                          Elias Nader
                                                          Secretary
  INDEX TO EXHIBITS
  
  Exhibit
  Number           Description
  -------          -----------
   99.1            Monthly Operating Report for the month ended October 27, 2001,
                   dated November 20, 2001.