EXHIBIT 99.3

                                 CERTIFICATION
           PURSUANT TO SECTION 1350 OF CHAPTER 63 OF TITLE 18 OF THE
             UNITED STATES CODE AS ADOPTED PURSUANT TO SECTION 906
                       OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the filing of the Quarterly Report on Form 10-Q of
Harris Corporation ("Harris") for the fiscal quarter ended September 27, 2002,
as filed with the Securities and Exchange Commission on the date hereof (the
"Report"), the undersigned, Bryan R. Roub, Senior Vice President and Chief
Financial Officer of Harris, hereby certifies, pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, 18 U.S.C. ss.1350, that:

     (1) The Report fully complies with the requirements of Section 13(a) or
         15(d), as applicable, of the Securities Exchange Act of 1934, and

     (2) The information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations of
         Harris.

Dated:
November 5, 2002                          /s/ Bryan R. Roub
                                          --------------------------------------
                                          Name: Bryan R. Roub
                                          Title: Senior Vice President and Chief
                                          Financial Officer