10.8
                                FOURTH AMENDMENT
                                       TO
                                 LEASE AGREEMENT

This FOURTH AMENDMENT TO LEASE AGREEMENT ("Amendment") dated effective this 28th
day of February 2002, by and between  ParkerVision,  Inc., a Florida corporation
("Tenant")  and Jeffrey  Parker and Barbara  Parker  (collectively  "Landlord"),
amends that certain  Lease  Agreement  dated March 1, 1992,  as amended,  by and
between Landlord and Tenant (the "Lease"). Capitalized terms used herein and not
otherwise defined shall have the same meaning ascribed to them in the Lease.

Landlord and Tenant hereby agree as follows:

     1.   The Minimum Basic Rent during the second Option Period as set forth in
          Paragraph 5 of the Lease is hereby amended to read as follows:

          Option Period                      Basic Rent
          -------------                      ----------
          Second option period
          (3/1/2002 - 2/28/2007)             $279,306 per year

     2.   Except  as  modified  by this  Agreement,  the  Lease  and  any  prior
          amendments  thereto  shall  remain  unchanged  and in full  force  and
          effect.

     3.   This  Amendment  shall  be  binding  upon the  heirs,  administrators,
          successors, and assigns of the parties hereto.

IN WITNESS  WHEREOF,  the Landlord and Tenant have executed this Amendment as of
the date first written above.


PARKERVISION, INC., a Florida corporation

By:    /s/ Richard L. Sisisky                /s/ Jeffrey Parker
       -----------------------------         ---------------------------
Name:  Richard L. Sisisky                    JEFFREY PARKER
       -----------------------------
Title: President
       -----------------------------
                                             /s/ Barbara Parker
                                             ---------------------------
                                             BARBARA PARKER

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