Document:

LEASE AGREEMENT
                                 ---------------

      AGREEMENT of Lease made this 7th day of October, 2005 by and between, Adom
Realty Trust, a  Massachusetts  Realty Trust by Antonio Moda, its Trustee,  P.O.
Box 132 West  Boxford,  Massachusetts  01885 its heirs,  successors  and assigns
where the  context so admits,  (hereinafter  referred to as  "LESSOR"),  and YDI
Wireless,  Inc., a Delaware Corporation,  2115 O'Nel Drive, San Jose, California
95131 (hereinafter referred as its "LESSEE").

      Whereas, the LESSEE is desirous of leasing the Property as described below
and the LESSOR is willing to lease said  Property  to LESSEE  upon the terms and
conditions hereinafter set forth:

1.    PROPERTY
      --------
      That portion of the  building  located at 22  Parkridge  Road,  Haverhill,
      Essex County,  containing  approximately 17,316 square feet, more or less,
      on first floor and mezzanine, hereinafter referred to as the "Premises" or
      the "Property". (See Exhibit A.)

2.    TERM
      ----
      Unless sooner terminated as hereinafter  provided,  the term of this Lease
      shall be for a period of approximately  10 years,  commencing on the later
      of (a) November 1, 2005 (C.D.) or (b) ten (10) days after  written  notice
      of substantial  completion by Lessor of its  contemplated  renovations and
      ending on October  31,  2015,  (this Term is  subject  to  Lessee's  early
      Termination  Rights as  described  in  Addendum  3),,.  The  LESSEE  shall
      thereafter  hold said Property  hereby leased during the full term of this
      lease and paying rent stated in Paragraph 3 for said term.

3.    BASE RENT
      ---------
      LESSEE  shall pay to LESSOR base rent at the rate of six  ($6.00)  dollars
      per year,  payable in  advance  in twelve  (12)  monthly  installments  of
      $8,658.  on the first day of each  calendar  month in  advance,  the first
      monthly payment (for the third month of the term of this Lease) to be made
      on execution of this Lease,  including  payment in advance for appropriate
      fractions  of a  monthly  payment  for  any  portion  of a  month  at  the
      commencement  of  said  term or at the  termination  of  this  Lease,  all
      payments to be made to LESSOR or its agent, at P.O. Box 132, West Boxford,
      Massachusetts  01855 or at such other  place as LESSOR  shall from time to
      time  designate  in  writing.  * The first two  months of the term of this
      Lease are hereby provided to LESSEE without charge.

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      The Base  Rent  for each  year of the term  (the  Base  Rent)  shall be as
      follows:

       Lease Year         Per SF            Per Year          Per Month
       ----------         ------            --------          ---------
       1                  $6.00             * $86,580.       $ 8,658.06
       2-3                $6.50             $112,554.        $ 9,379.50
       4-5                $6.75             $116,883.        $ 9,740.25
       6-7                $7.00             $121,212.        $10,101.00
       8                  $7.20             $124,675         $10,389.60
       9                  $7.40             $128,138         $10,678.20
       10                 $7.60             $131,601.        $10,966.80

      The LESSEE  agrees that it will during said Term and for such further time
      as the said LESSEE or any person or persons  claiming  under it shall hold
      said  Property or any part thereof pay unto the LESSOR and its assigns and
      successor  the said yearly rent herein  before  provided for upon the days
      herein before appointed for the payment of rent during said term.

4.    PAYMENTS UPON SIGNING AGREEMENT
      -------------------------------
      LESSEE shall pay to LESSOR upon the Execution of this  Agreement the First
      Month's  rent per  Paragraph  3,  $8,658.00  and the  Additional  Rent per
      Paragraph  7,  $2,164.50  and  the  Security   Deposit  per  Paragraph  5,
      $10,822,56 for a Total Due upon Execution of this Lease, $21,645.06.

5.    SECURITY DEPOSIT
      ----------------
      Upon the  execution  of this Lease,  LESSEE shall pay to LESSOR a security
      deposit in the amount of $10,822.56.,  which shall be held as security for
      the LESSEE's performance as provided herein and refunded to LESSEE without
      interest within thirty (30) days of the expiration or earlier  termination
      oft this  Lease  subject  to  LESSEE's  satisfactory  compliance  with the
      conditions hereof. LESSOR shall not be required to segregate any such sums
      held as a security deposit from other funds of the LESSOR.

6.    USE OF PROPERTY
      ---------------
      LESSEE  shall use the  leased  Property  only for the  purpose  of Office,
      Research and Development, Manufacturing, and Warehouse. LESSEE agrees that
      said  use of the  Property  by  LESSEE  shall  be in  accordance  with the
      Zoning-By-Laws  of the Town or City that the  Property  is  situated in as
      amended  from time to time.  If the  Property  is not zoned so as to allow
      Lessee's  use as set forth in the  foregoing,  Lessee may  terminate  this
      Lease upon thirty (30) days  notice to Lessor and upon  Lessee's  vacating
      the Property in accordance with this Lease, all obligations of the parties
      hereto shall cease.

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7.    ADDITIONAL RENT
      ---------------
      (A)   During each year of the  initial  term of this Lease and any renewal
            term,  LESSEE  shall pay to LESSOR,  as  additional  rent,  LESSEE's
            proportionate share of any and all real estate taxes assessed for or
            with respect to the land and  building of which the leased  Property
            are a part for all tax periods  wholly or partially  included in the
            term of this Lease. The term "real estate taxes" shall mean the real
            estate taxes and  assessments  imposed upon the land and building of
            which the leased Property are a part, including, but not limited to,
            any  and all  other  taxes,  levies,  betterments,  assessments  and
            charges  arising  from the  ownership  and/or the  operation  of the
            building which are or shall be imposed by Federal,  State, Municipal
            or other  authorities,  and which are or may become a lien upon said
            land  and  building.  If due to a future  change  in the  method  of
            taxation,  any  franchise,  income  or  profit  tax  shall be levied
            against LESSOR in substitution for or in lieu of any tax which would
            otherwise  constitute  real  estate  taxes or if a  specific  tax on
            rentals  from the  building  shall be levied  against  LESSOR,  such
            franchise,   rental,  income  or  profit  tax  shall  be  deemed  to
            constitute  real  estate  taxes for the  purposes  hereof.  LESSEE's
            proportionate  share of any such real  estate  taxes  shall be a sum
            equal  to  33.42  percent  of such  real  estate  taxes  as  defined
            hereinabove.

      (B)   During each year of the  initial  term of this Lease and any renewal
            term, LESSEE shall pay to LESSOR 33.42 percent of LESSOR's operating
            costs which include,  but not limited to management  fees (capped at
            5%  of  gross  rents  of  building),   fire   protection,   security
            guard/alarms,  utilities,  supplies,  janitorial  services,  rubbish
            removal  and  snow  and  ice  removal,   routine   maintenance   and
            replacement of  landscaping,  and premiums for public  liability and
            property,  damage,  fire, and extended  coverage  insurance.  LESSEE
            shall not be responsible for (i) capital improvements; (ii) salaries
            of officers and executives of the LESSOR;  (iii) depreciation of the
            Building;  (iv) expenses relating to alterations made by the LESSEE;
            (v) interest and amortization of principal on indebtedness;  (vi) if
            already  charged to LESSEE,  expenses  for which the LESSOR,  by the
            terms of this Lease, or any other lease or rental  arrangement makes
            a separate charge;  (vii) real estate taxes as part of the operating
            fees; (viii) the cost of any electric current furnished  exclusively
            to and  responsible to be paid for by any Building  occupant  (other
            than  LESSEE);  (ix)  leasing fees or  commissions;  (x) the cost to
            perform an  environmental  site  assessment  of the Property and, if
            pollutants are found thereby,  to clean the Property of same and the
            cost of any  work  needed  to have  the  Property  comply  with  any
            environmental  laws;  (xi) any cost  incurred  to  benefit  Building
            occupants other than LESSEE; (xii) any ground lease rent; (xiii) any
            costs  associated  with  rebuilding  the  Building  or  other  costs
            incurred  resulting  from  damage  by  fire  or  other  casualty  or
            condemnation not otherwise the  responsibility  of LESSEE under this
            Lease; (xiv) any costs to correct original defects or latent

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            defects  in the  Building;  and (xv) all  other  items  which  under
            generally accepted accounting  principles as consistently applied in
            the real estate  industry  for  industrial  buildings  are  properly
            classified as capital expenditures.

      (C)   LESSEE  shall pay  interest,  at an annual  rate of  eighteen  (18%)
            percent  from the date  due,  for any  installment  of rent or other
            payment  which is not  received by LESSOR  within  seven (7) days of
            said due date.  LESSOR's  failure  during  the Lease term to prepare
            and/or  deliver any of the  foregoing  statements  or  invoices,  or
            LESSOR's  failure to make a demand  under  paragraph  7 or any other
            provisions  of this  Lease,  shall  not in any way  cause  LESSOR to
            forfeit or  surrender  its rights to  collect  any of the  foregoing
            items of  additional  rent which may have become due during the term
            of this Lease.

      (D)   The  Additional  Rent  consisting of Real Estate Taxes and Operating
            Costs are to be paid on an  estimated  monthly  basis  with the Base
            Rent and will be  adjusted  upward or  downward as called for by the
            actual  expenses  attributed  to the  premises  on an  annual  basis
            (January 1 - December  31).  LESSOR will submit a copy of the Annual
            Additional  Rent  Reconciliation  to the  LESSEE  along with a bill,
            (which shall include copies of all invoices,  property tax bills and
            with copies of cancelled  checks),  for any outstanding  balance due
            LESSOR or a credit from any  overpayments  made to LESSOR by LESSEE.
            The  current  estimated  Additional  Rent is $1.50 per  Square  Foot
            annually,  $2,164.50  monthly,  (see  Exhibit  B),.  Any  additional
            amounts  owing to Lessor from Lessee must be claimed by May 1 of the
            ensuing year or such amounts shall be waived.

8.    UTILITIES
      ---------
      LESSOR shall provide and maintain  equipment  required to adequately  heat
      and cool the  leased  Property  (68-72  degrees  year-round)  at its cost.
      LESSEE shall pay  directly as they become due, all charges for  utilities,
      including  but  not  limited  to,  heat,  fuel  electricity,   water,  and
      telephone,  used and/or furnished on the leased  Property.  No plumbing or
      electrical  work of any type shall be done without  LESSOR's  approval and
      the appropriate municipal permit and inspector's  approval.  LESSEE hereby
      acknowledges  that water  connections  are provided by LESSOR for domestic
      sanitary  purposes  only and no process  water usage shall be permitted on
      the leased Property.  LESSOR shall have no obligation to provide utilities
      or equipment other than the utilities and equipment within the Property as
      of the  commencement  date of this  lease.  In the event  LESSEE  requires
      additional  utilities  or  equipment,  the  installation  and  maintenance
      thereof  shall  be  the  LESSEE's  sole  obligation,  provided  that  such
      installation  shall be subject to the written  consent of the LESSOR.  The
      LESSOR shall provide  existing HVAC system in good working order,  capable
      of  maintaining  68-72  degrees  of  temperature,  (year  round),.  Lessor
      represents to Lessee that all  utilitities  serving the

                                      -4-
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      Property of Lessee are separately metered except water,  sewer, and common
      area/house  electricity  (of which charges Lessee shall be responsible for
      33.42%).

9.    COMPLIANCE WITH LAWS
      --------------------
      LESSEE  acknowledges  that no  trade,  occupation,  or  activity  shall be
      conducted  in the  leased  Property  or use made  thereof,  which  will be
      unlawful  improper,  noisy  or  offensive  or  contrary  to any law or any
      municipal  by-law or  ordinance  in force in the city or town in which the
      Property  is  situated  or which tend to degrade  the  economic  status or
      reputation of the building. LESSEE shall keep all employees working in the
      leased Property covered with Worker's Compensation  insurance,  and LESSEE
      shall be  responsible  for causing  the  Property  and any work  conducted
      therein to be in full compliance with the  Occupational  Safety and Health
      Act of 1970 and any amendments thereof.

10.   FIRE INSURANCE
      --------------
      LESSEE  shall not permit any use of the  leased  Property  which will make
      voidable any  insurance on the Property of which the Leased  Property is a
      part,  or on the  contents of said  Property or which would be contrary to
      any law or  regulation  from time to time  established  by the New England
      Fire Insurance Rating Association,  local fire department or similar body.
      LESSEE  shall on  demand  reimburse  LESSOR,  and all  other  LESSEES,  if
      applicable,  for all additional  insurance premiums caused by LESSEE's use
      of the Property.

11.   MAINTENANCE
      -----------
      (A)   LESSOR's  Obligations
            LESSOR  agrees  to keep in good  order  and  condition  the  utility
            systems,  mechanical  systems,  life  safety  systems,  landscaping,
            driveways, parking, loading areas and the structural portions of the
            Property in the same condition as it is on the Commencement  Date or
            as it may be put  in,  i.e.  improvements,  during  the  term of the
            Lease,  reasonable wear and tear,  damage by fire and other casualty
            only  excepted,  unless  such  maintenance  is  required  because of
            conduct of LESSEE or those for which  conduct  the LESSEE is legally
            responsible, and, excepting any glass in the leased Property and any
            condition in the  Property  caused by any act or  negligence  of the
            LESSEE or any  employee,  agent  servant  or  contractor  of LESSEE.
            Without  limitation,  LESSOR shall not be responsible for the making
            of any  improvements  or  repairs  in  the  Property  not  expressly
            provided  herein.  Further,  LESSOR  shall  never be liable  for any
            failure to make repairs inside the leased Premises which,  under the
            provisions  of this section or  elsewhere in this Lease,  LESSOR has
            undertaken  to make unless  LESSEE has given notice to LESSOR of the
            need  to  make  such  repairs,  or of a  condition  of the  Property
            requiring repair and LESSOR

                                      -5-
<PAGE>

      has failed to commence to make such repairs within a reasonable time after
      receipt of such notice.

      (B)   LESSEE's  Obligations:
            LESSEE agrees to maintain, at its sole expense, all other aspects of
            the  leased  Property  in the  same  condition  as  they  are at the
            commencement of the term or as they may be put in as to improvements
            during the term of this  Lease,  normal  wear and tear and damage by
            fire or other casualty only  excepted,  and whenever  necessary,  to
            replace   light  bulbs,   plate  glass  and  other  glass   therein,
            acknowledging  that the leased Property is now in good order and the
            light bulbs and glass whole.  LESSEE will  properly  control or vent
            all solvents, degreasers, or other similar substances, and shall not
            cause the areas  surrounding  the leased  Property to be in anything
            other  than a neat and  clean  condition,  depositing  all  waste in
            appropriate receptacles. LESSEE shall not permit the leased Property
            to be overloaded,  damaged, stripped or defaced nor suffer any waste
            and  will  not  keep  animals  within  the  leased   Property.   Any
            maintenance  which  is  necessitated  by  some  specific  aspect  of
            LESSEE's use of the Property  shall be at LESSEE's  expense.  LESSEE
            shall obtain written  consent of LESSOR before  erecting any sign on
            the  Property or sign that may be visible  from the  exterior of the
            Property or  Building.  LESSEE  shall be  responsible  for  ordinary
            maintenance  to the  Premise's  mechanical  and  electrical  systems
            and/or wiring and/or units including but not limited to all heating,
            air  conditioning,  ventilation  and other  mechanical  installation
            including but not limited to ordinary maintenance of said systems.

12.   ALTERATIONS
      -----------
      LESSEE shall not make any structural changes,  alterations or additions to
      the leased Property, but LESSEE shall have the right, as its expense, from
      time to time,  having first  obtained  LESSOR's  written  consent  thereto
      (which consent shall not be unreasonably  withheld) to make non-structural
      alterations,  additions  and  changes  in the leased  Property;  provided,
      however,  that such alterations and changes shall not injure the safety of
      the structure of the leased Property,  nor diminish its value and shall be
      done in a good  workmanlike  manner  in a  quality  at least  equal to the
      present  construction and provided further that upon the LESSOR's request,
      LESSEE,  at the  expiration  or other  termination  of this  Lease,  shall
      restore the leased  Property to its original  condition  (but LESSEE shall
      only have the obligation to restore if LESSOR  required this in writing as
      part of giving LESSOR's  initial consent to the changes,  alterations,  or
      additions).  All such allowed  alterations  shall be at LESSEE's  expense.
      LESSEE shall not permit any mechanics  liens,  or similar liens, to remain
      upon the leased  Property for labor and  materials  furnished to LESSEE in
      connection with work of any character performed to or claimed to have been
      performed  at the  direction of LESSEE and shall cause any such lien to be
      released  of  record  forthwith  without  cost

                                      -6-
<PAGE>

      or expense  of any kind to  LESSOR.  Except as  otherwise  provided,  upon
      expiration  or earlier  termination  of this Lease,  any such  alteration,
      addition or change  shall  become part of the real estate and the Property
      of LESSOR. LESSEE further covenants and agrees to save LESSOR harmless and
      indemnified  from all  injury,  loss,  claims or  damage to any  person or
      Property occasioned by or arising out of any such work.

      The LESSOR has  reviewed the  LESSEE's  proposed  layouts and has accepted
      LESSEE's alterations and additions, (See Exhibit C),.

13.   ASSIGNMENT OR SUBLEASING
      ------------------------
      Except  as to  its  subsidiaries,  affiliates,  parent  or  successors  in
      interest,  the Lessee  shall not assign or sublet the whole or any part of
      the leased  premises  without the Lessor's  prior  written  consent.  Said
      consent   shall  not  be   unreasonably   withheld,   denied  or  delayed.
      Notwithstanding such consent, Lessee shall remain liable to Lessor for the
      payment  of all rent and for the full  performance  of the  covenants  and
      conditions of this Lease.

      Lessee   shall  have  the  right  to  assign  the  Lease  to  any  of  its
      subsidiaries,  parent,  affiliates  or working  partnership  or  surviving
      company  resulting from a merger or sale of assets of the Lessee,  without
      Lessor's consent.  In no event shall such assignment  release the original
      tenant. However Lessor shall be notified in the event of any change.

14.   SUBORDINATION
      -------------
      This  Lease,  and  LESSEE's  interest  hereunder,  shall  be  subject  and
      subordinate  to the lien of any and all  present  or  future  mortgage  or
      mortgages  upon the leased  Property  or any  property of which the leased
      Property is a part  irrespective  of the time of execution or recording of
      any such mortgage or  mortgages.  The word  "mortgage"(s)  as used in this
      Paragraph  shall mean  mortgages,  deeds of trust,  and any other  similar
      instruments  in the nature of a mortgage  at any time  hereafter,  and all
      modifications,  extensions, renewals and replacements thereof, and any and
      all advances  thereunder.  LESSEE shall, when requested,  promptly execute
      and deliver  such  written  instruments  as shall be necessary to show the
      subordination of this Lease to said mortgages or other such instruments in
      the nature of a mortgage and in any event,  LESSEE hereby  appoints LESSOR
      attorney-in-fact irrevocable of LESSEE to execute, acknowledge and deliver
      any and all further instruments required to affect any such subordination,
      if required by the holder of any mortgage or other such  instrument in the
      nature  of a  mortgage.  As long  as the  Tenant  is  provided  the  quiet
      enjoyment  and  nondisturbance  of  the  Premises.   Notwithstanding   the
      forgoing,  LESSEE's  obligations to subordinate  this Lease is conditioned
      upon  Lessee's  receipt of a  nondisturbance  agreement  whereby  Lessee's
      rights  hereunder are not  interfered  with provided that Lessee is not in
      default of this Lease. Lessor shall use commercially reasonable efforts to
      secure a nondisturbance agreement from any current mortgagee.

                                      -7-
<PAGE>

15.   LESSOR'S ACCESS
      ---------------
      LESSOR or its Agents  shall have the right to enter the lease  Property at
      all  reasonable  hours for the purpose of inspecting or making  repairs to
      the same, and LESSOR shall also have the right to make access available at
      all reasonable hours,  after reasonable notice, to prospective or existing
      mortgagees or  purchasers of the leased  Property or the Property of which
      the leased Property is a part. For a period  commencing twelve (12) months
      prior to the  expiration  of the term of this  Lease,  LESSOR  shall  have
      reasonable  access at all reasonable  hours to the leased Property for the
      purpose of exhibiting the same to prospective  tenants. At any time within
      the twelve-  (12) months  before the  expiration  of the term,  LESSOR may
      affix to any  suitable  part of the  Property  of which the  Property is a
      part,  a  sign  and  keep  the  same  so  affixed  without   hindrance  or
      molestation.

16.   SNOW REMOVAL
      ------------
      The  plowing  of snow  from all  roadways,  access  ways and  unobstructed
      parking  and  loading  areas  shall be the  responsibility  of LESSOR with
      LESSEE  paying its  proportionate  share for the costs thereof as provided
      for in Paragraph 7  hereinabove.  The control of snow and ice on all steps
      serving the leased Property and all other areas not readily  accessible to
      plow  shall be the sole  responsibility  of  LESSEE.  Notwithstanding  the
      foregoing,  however,  LESSEE shall hold LESSOR  harmless  from any and all
      claims by LESSEE, LESSEE's agents, representatives,  employees or business
      invitees for damage or personal  injury  resulting in any way from snow or
      ice on any areas  serving  the leased  Property,  the  removal of which is
      Lessee's responsibility.

17.   RUBBISH REMOVAL
      ---------------
      LESSEE shall utilize any  independent  rubbish or trash removal service or
      their choice and at the LESSEE'S expense,  and Lessor shall provide Lessee
      with a location for a dumpster at no additional cost.

18.   COMMON AREAS AND PARKING
      ------------------------
      LESSEE shall have the right,  without  additional  charge, to use up to 40
      parking spaces in the parking facilities provided for the leased Property,
      stairs,  walkways or other areas in common with the others entitled to the
      use thereof for  reasonable  access to the leased  Property.  Said parking
      areas plus any stairs,  walkways or other  common areas shall in all cases
      be considered  extensions  of the leased  Property to the extent that they
      are  utilized  by LESSEE,  or  LESSEE's  employees,  visitors  or business
      invites.  LESSEE  shall not  obstruct  in any  manner  any  portion of the
      building or the walkways or  approaches  to said building and will conform
      to all reasonable  rules and  regulations  now or hereafter made by LESSOR
      for parking and for the care,  use, or  alteration  of the  building,  its
      facilities and approaches provided that any such rules and regulations are
      applicable to all  occupants of the building and are  uniformly  enforced.
      LESSEE  further  warrants  that  LESSEE  will not permit any  employee  or
      visitor to violate this or any other covenant or

                                      -8-
<PAGE>

      obligation  of LESSEE.  No vehicle  shall be stored or left in any parking
      area for more than three (3) nights  without  LESSOR's  written  approval.
      Unregistered or disabled  vehicles or storage trailers of any type may not
      be parked  overnight at any time.  LESSEE agrees to assume all expense and
      risk for the  towing  of any  misparked  vehicle  belonging  to  LESSEE or
      LESSEE's  agents,  employees,  business  invites  or  callers at any time.
      LESSOR  shall have the right from time to time,  to (A) change the size of
      any common  facility,  (B) change  the  location  and nature of any common
      facility,  (C) make,  and from time to time change,  reasonable  rules and
      regulations  relating  to the use of the  common  facilities,  (D)  employ
      police  officers to enforce such rules and regulations and to regulate the
      conduct of persons using the common  facilities,  (E)  designate  specific
      parking areas or other  facility or portions  thereof for use by occupants
      of the leased  Property and their  employees and agents and to change from
      time to time the arrangement of parking areas,  (F) temporarily  close any
      common facilities to make repairs or changes or to prevent the acquisition
      of easements or a dedication to public use, or to  discourage  use of such
      facilities  by anyone not  entitled  thereto,  and (G) do any other act or
      thing respecting the common facilities which in LESSOR's sole judgment may
      be  desirable  to  improve  the  convenience  and  utility  of the  common
      facilities  to  the  occupants  of  the  Property  and  their   customers.
      Notwithstanding  the  foregoing,  no alteration  shall  materially  change
      access to the Premises or change the number of parking spaces available to
      Lessee.

19.   INDEMNIFICATION
      ---------------
      A.    To the maximum  extent  that this  agreement  may be made  effective
            according  to the  law,  LESSEE  agrees  that  it will  protect  and
            indemnify  LESSOR and save  Lessor  harmless  from and  against  all
            liabilities,  obligations,  claims  damages,  penalties,  causes  of
            action,   costs  and  expenses   (including,   without   limitation,
            reasonable attorney's fees and expenses) imposed upon or incurred by
            or asserted  against LESSOR by third party (a) by reason of LESSEE's
            use of the leased premises or by conduct of its business or from any
            activity, work or thing done, permitted or suffered by LESSEE, in or
            about the  leased  premises,  or (b) in any  manner  related  to the
            maintenance,  use or disposal of any oil or hazardous  material,  as
            defined  in  Chapter  21E of the  General  Laws by the  LESSEE,  its
            agents, servants or employees,  unless, in either situation,  caused
            by the LESSOR, his agents, servants or employees, provided, however,
            that LESSOR notifies LESSEE of such claim in writing within ten (10)
            days following  receipt of the notice.  LESSEE shall control defense
            thereof.  If LESSOR  desires to join any defense of such  claim,  it
            shall be  entitled  to do so at its sold  cost and  expense.  LESSOR
            agrees to cooperate with LESSEE and its counsel.  LESSOR  represents
            to LESSEE that to the best of its knowledge  without inquiry,  as of
            the date of this  lease,  there  does not  exist on, in or under the
            Property or Building  any oil or hazardous  material,  as defined in
            Chapter 21E of the General Laws. If any such  hazardous  material is

                                      -9-
<PAGE>

            discovered  at any time during the term of this lease,  LESSOR shall
            indemnify,  defend and hold LESSEE harmless from and against and all
            claims,  liabilities,   actions,  judgments,  and  damages  directly
            resulting  from  the  presence  and/or  removal  of  such  hazardous
            material,  unless  caused  by the  acts of the  LESSEE  or  LESSEE's
            employees while in or around the Property or Building, provided that
            in no event shall LESSEE be responsible for any conditions  existing
            prior to the date of this lease. LESSOR shall defend,  indemnify and
            save  LESSEE  harmless  from and against  all  liabilities,  claims,
            judgments,  costs  and  expenses,  including,  but not  limited  to,
            reasonable  attorneys'  fees, to the extent arising by reason of any
            negligent  or  tortuous  act on the  part  of  LESSOR  or any of its
            employees or agents.

      B.    To the maximum  extent  that this  agreement  may be made  effective
            according  to the  law,  LESSOR  agrees  that  it will  protect  and
            indemnify  LESSEE and save  Lessee  harmless  from and  against  all
            liabilities,  obligations,  claims  damages,  penalties,  causes  of
            action,   costs  and  expenses   (including,   without   limitation,
            reasonable attorney's fees and expenses) imposed upon or incurred by
            or asserted  against LESSEE by third party (a) by reason of LESSOR's
            ownership or use of the leased  premises or the building or property
            of which the leased premises  constitutes a portion or by conduct of
            its business or from any activity,  work or thing done, permitted or
            suffered by LESSOR,  in or about the leased premises or the building
            or property of which the leased premises  constitutes a portion,  or
            (b) in any manner related to the maintenance, use or disposal of any
            oil or hazardous material,  as defined in Chapter 21E of the General
            Laws by the LESSOR,  its agents,  servants or employees,  unless, in
            either  situation,  caused by the LESSEE,  his  agents,  servants or
            employees,  provided,  however,  that LESSEE notifies LESSOR of such
            claim in  writing  within  ten (10) days  following  receipt  of the
            notice.  LESSOR shall control defense thereof.  If LESSEE desires to
            join any defense of such claim, it shall be entitled to do so at its
            sold cost and expense.  LESSEE  agrees to cooperate  with LESSOR and
            its counsel.

20.   LESSEE'S LIABILITY INSURANCE
      ----------------------------
      During  the term of this  Lease  and any  extension  thereof,  LESSEE,  at
      LESSEE's own cost and expense  shall  maintain or cause to be procured and
      maintained,  in the names of LESSOR and  LESSEE,  a policy or  policies of
      general  liability  insurance and/or  comprehensive  Commercial  Liability
      Insurance  against  claims and damages in connection  with the Property in
      amount of not less than One Million  ($1,000,000.00)  Dollars with respect
      to  injuries  or  deaths  suffered  in any one  accident  and Two  Million
      ($2,000,000.00)  Dollars per  location  and in the amount of not less than
      One Million  ($1,000,000.00)  Dollars  with respect to damage to property.
      LESSEE  covenants  and agrees that LESSEE,  will upon demand,  as often as

                                      -10-
<PAGE>

      reasonably  requested by LESSOR and within 30 days after the  Commencement
      Date, furnish to LESSOR a complete list,  statement and description of all
      insurance,  together with certificates from each insurance company issuing
      any thereof,  that the same is in full force and effect, that all premiums
      have been paid,  and that the same will not be  canceled  except upon (30)
      days written  notice to LESSOR by  registered  or certified  mail,  return
      receipt requested. Renewal Certificates of Insurance shall be delivered to
      the LESSOR at least  fifteen  (15) days in advance of each  renewal  date.
      LESSEE agrees that the insurance  coverages  required  under  paragraph 20
      shall be written by: a company or companies  authorized  to do business in
      the  Commonwealth  of  Massachusetts  within an A.M. - Best rating of "A",
      VIII or better.

21.   FIRE, CASUALTY, EMINENT DOMAIN AND DEMOLITION
      ---------------------------------------------

      (A)   Should 25% or more of the Premises or of the property of which it is
            a part, be  substantially  damaged by fire or other casualty,  or be
            taken by eminent  domain,  LESSOR or LESSEE  may elect to  terminate
            this Lease.  In addition,  if such fire,  casualty or taking renders
            25% or more of the Premises unusable,  LESSEE may elect to terminate
            this Lease, provided that if LESSEE does not terminate this Lease, a
            just and  proportionate  abatement of rent shall be made. LESSEE may
            elect to  terminate  this  Lease if  LESSOR  fails  to  restore  the
            Premises to the same  condition  existing  immediately  prior to the
            date of fire or casualty  (excluding  the  restoration of any tenant
            improvements  made by LESSEE)  within  ninety (90) days  thereafter.
            LESSOR  shall not be liable for any  inconvenience  or  annoyance to
            LESSEE  or for  injury to the  business  of  LESSEE  resulting  from
            excused delays in connection with restoration delays which may arise
            by reason of adjustment of insurance,  reasonable  delays on account
            of "labor  troubles" or other cause  beyond the LESSOR's  reasonable
            delays on  account of "labor  troubles"  or other  cause  beyond the
            LESSOR's reasonable control.

            LESSOR reserves and the LESSEE grants to LESSOR all rights which the
            LESSEE may have for damages or injury to the Premises for any taking
            by  eminent  domain,  except for  damage to  LESSEE's  improvements,
            fixtures, property or equipment and relocation expense.

            The  provisions of this paragraph as it relates to fire and casualty
            shall govern in the case of damage or destruction of the Building or
            any part thereof and  restoration  thereof due to a fire or casualty
            notwithstanding any inconsistent provisions of this Lease.

            Not  withstanding  anything to the contrary in this  Paragraph,  the
            provisions  hereof  shall be subject and  subordinate  to the rights
            contained in any of LESSOR's mortgage financing  documents affecting
            the Property.

                                      -11-
<PAGE>

      (B)   Waiver of  Subrogation:  LESSOR and LESSEE hereby release each other
            from any and all liability or  responsibility to the other or anyone
            claiming  through or under them by way of  subrogation  or otherwise
            for any loss or damage covered by property insurance or coverable by
            a  customary  form  of  policy  of  the  insurance   required  under
            subsection C below,  even if such fire or other  casualty shall have
            been caused by the fault or negligence of the other party, or anyone
            for whom such party may be responsible, provided, however, that this
            release  shall be  applicable  and in force and  effect  only to the
            extent  permitted by law.  LESSOR and LESSEE each agree that it will
            request its insurance carriers to include in it policies, whether or
            not such policies are required hereunder, a clause or endorsement to
            the effect that any such  release  shall not  adversely  affect such
            policies  or  prejudice   the  right  of  the  releaser  to  recover
            thereunder. If extra cost shall be charged, each party will bear the
            amount of its extra cost.

      (C)   Lessor's   Insurance:   LESSOR  shall  maintain   all-risk  property
            insurance  with  respect to the  Building in an amount  equal to the
            full replacement value of the Building.

22.   BROKERAGE
      ---------
      Each party  warranties that they have only spoken with Coldwell Banker and
      Vesper Realty Advisors, Inc. regarding the lease on this property.  Lessor
      shall pay these two  brokers.  LESSEE  shall in no event  bear any cost or
      expense  of  brokerage  commissions  or fees for the above  brokers in the
      negotiation  of this Lease at this time.  LESSEE  agrees to indemnify  and
      hold the LESSOR  harmless  if such  warranty  or  representation  shall be
      deemed untrue.

23.   SIGNS
      -----
      LESSEE shall not erect any sign on the leased Property without the written
      consent of the LESSOR (which shall not be unreasonably withheld,  delayed,
      or conditioned);  and in the event of LESSOR's consent,  LESSEE shall only
      place such signs as shall be of such size,  style,  color, and working and
      in such location as LESSOR shall in its sold  direction  deem necessary in
      order to maintain an  aesthetically  pleasing  appearance for the land and
      building of which the leased Property is a part.

24.   DEFAULT, BANKRUPTCY AND ACCELERATION OF RENT
      --------------------------------------------
      In the event  that,  (A) LESSEE  shall be declared  bankrupt or  insolvent
      according to law, or if any assignment shall be made of LESSEE's  property
      for the benefit of creditors  or, (B) LESSEE shall  default in the payment
      of any installment of rent or other sums herein specified and such default
      shall  continue for ten (10) days after  written  notice  thereof,  of (C)
      LESSEE shall  default in the  observance  or  performance  of any other of
      LESSEE's covenants,  agreements or obligations hereunder and the effect of
      any such  default  shall  not have  been  cured or  LESSEE  shall not have
      commenced  and

                                      -12-
<PAGE>

      diligently  prosecuted the same at all times thereafter within thirty (30)
      days after  written  notice of said default  from the LESSOR,  then LESSOR
      shall have the right thereafter  while such default  continues and without
      demand or further notice, to re-enter and take complete  possession of the
      Premises,  to declare the term of this Lease ended and to remove  LESSEE's
      effects  without  being  guilt  of any  manner  of  trespass  and  without
      prejudice  to any remedies  which might be  otherwise  used for arrears of
      rent or other default or breach of covenant.

      LESSEE shall indemnify  LESSOR against all loss of rent and other payments
      that LESSOR may incur by reason of such  termination  during the remainder
      of the term. If LESSEE shall default,  in the observance or performance of
      any  conditions  or covenants on LESSEE's part to be observed or performed
      under or by  virtue  of any of the  provisions  in any  Paragraph  of this
      Lease,  LESSOR upon ten (10) days written notice to LESSEE,  without being
      under any  obligation to do so and without  thereby  waiving such default,
      may remedy the same for the  account of and at the  expense of LESSEE.  If
      LESSOR  pays or  incurs  any  obligations  for the  payment  of  money  in
      connection therewith, including, but not limited to, reasonable attorney's
      fees in  instituting,  prosecuting  or defending any action or proceeding,
      such sums paid or obligations  incurred,  with interest at the rate of ten
      percent  per  annum  and  costs,  shall be paid to  LESSOR  by  LESSEE  as
      additional  rent.  LESSEE further agrees to pay all reasonable  attorneys'
      fees if LESSOR  obtains a judgment  against  LESSEE  incurred by LESSOR in
      enforcing non-payment of rent.

25.   NOTICE
      ------
      All notices or other communications shall be deemed given and delivered to
      the respective  parties five (5) business days after mailed, by registered
      or certified  mail,  postage and  registration  or  certification  charges
      prepaid,  addressed to the parties at the  addresses set forth below or by
      constable  except that either  party may, by written  notice to the other,
      designate  another  address  which shall  thereupon  become the  effective
      address of such party for the  purposes  of this  paragraph.  All  notices
      shall be sent to the following:

      To the LESSOR:
                                         Mr. Anthony Moda, Trustee
                                         Adom Realty Trust
                                         (978) 372-7757
                                         naturespalette@comcast.net
                                         P.O. Box 132
                                         West Boxford, Massachusetts 01885

                                      -13-
<PAGE>

      To the LESSEE:
                                         Terabeam/YDI Wireless, Inc.
                                         Mr. Dana Wheeler
                                         (978) 974-0931
                                         dwheeler@terabeam.com
                                         ---------------------
                                         22 Parkridge Road
                                         Haverhill, Massachusetts 01835

      With Copy to:
                                         YDI Wireless, Inc.
                                         2115 O'Nel Drive
                                         San Jose, CA  95131
                                         Attn:  Chief Financial Officer
                                         Main: (408) 731-2700
                                         Fax:  (408) 731-3675

26.   OCCUPANCY
      ---------
      LESSOR agrees that LESSEE shall have the right to access the Premises from
      and after the mutual  execution  and  delivery of this Lease,  in order to
      prepare the  Premises  for  LESSEE's  occupancy.  In the event that LESSEE
      takes  possession of the Premises prior to the commencement of the term of
      this  Lease,  LESSEE  covenants  and agrees to perform  and observe all of
      LESSEE's covenants herein from the date upon which LESSEE takes possession
      except  its  obligation  for the  payment  of any rent.  In the event that
      LESSEE remains after the agreed  expiration date of this Lease without the
      written  permission  of LESSOR  then all other  terms of this Lease  shall
      continue to apply except that LESSEE shall be liable to LESSOR for any and
      all loss, damages or expenses incurred by LESSOR, and rent shall be due in
      monthly  installments at a rate of one hundred and fifty (150%) percent of
      that which would  otherwise be due under this Lease,  it being  understood
      between the parties that such extended occupancy as a tenant at sufferance
      is solely  for the  benefit  and  convenience  of  LESSEE  and as such has
      greater value.

27.   FIRE PREVENTION
      ---------------
      LESSEE agrees to use every reasonable  precaution  against fire and agrees
      to provide and maintain approved,  labeled fire extinguishers and maintain
      emergency  lighting  equipment  within the leased  Property as required or
      recommended  by the New England Fire Insurance  Association  (or successor
      organization),  OSHA  or  local  authorities  or  similar  entity.  LESSOR
      represents that the leased Property  currently contains emergency lighting
      equipment within the leased Property as required or recommended by the New
      England Fire Insurance  Association (or successor  organization),  OSHA or
      local authorities or similar entity.

                                      -14-
<PAGE>

28.   OUTSIDE AREA
      ------------
      No goods or  things  of any type or  description  shall be held or  stored
      outside  the leased  Property  at any time  without  the  express  written
      approval of LESSOR.

29.   ENVIRONMENT
      -----------
      LESSEE will so conduct and operate the leased Property as not to interfere
      in any manner with the use and enjoyment of other  portions of the same or
      neighboring   buildings   by  other  reason  of  odors,   smells,   noise,
      accumulation  of garbage or trash,  vermin or other pests or otherwise and
      will  at its  expense  employ  a  professional  pest  control  service  if
      necessary.  LESSEE agrees to maintain  efficient and effective devices for
      preventing damage to heating equipment from harmful solvents,  degreasers,
      cutting  oils,  and  similar  substances  which  may be  used  within  the
      Property. No hazardous waste or chemical waste of any sort shall be stored
      or allowed to remain within the leased Property at any time.

30.   RESPONSIBILITY
      --------------
      If either party is delayed,  hindered or prevented from the performance of
      an obligation because of strikes,  lockouts, labor troubles, the inability
      to procure  materials,  power failure,  restrictive  governmental  laws or
      regulations,  riots, insurrection,  war or another reason not the fault of
      the party delayed, but not including financial inability,  the performance
      shall be excused for the period of delay.  The period for the  performance
      shall  also be  extended  for a  period  equal  to the  period  of  delay.
      Notwithstanding the foregoing, LESSEE shall not be excused from the prompt
      payment  of rental,  additional  rental or other  payments.  It shall be a
      condition  of LESSEE's  right to claim an  extension  that  LESSEE  notify
      LESSOR,  in  writing,  within 10 days after the  occurrence  of the cause,
      specifying  the nature of the cause and the period of time  necessary  for
      performance.  LESSOR shall not be held liable to anyone for loss or damage
      caused in any way by the use, leakage or escape of water, or for cessation
      of any  service  or  utility  rendered  customarily  to said  Property  or
      buildings or agreed to by the terms of this Lease, due to any accident, to
      the  making  of   repairs,   alterations,   or   improvements,   to  labor
      difficulties,  weather conditions, or mechanical breakdowns, to trouble or
      scarcity in  obtaining  fuel,  electricity,  service or supplies  from the
      sources which they are usually  obtained for said building or to any cause
      beyond the LESSOR's immediate control.

31.   SURRENDER
      ---------
      LESSEE shall at the expiration or earlier termination of this Lease remove
      all of LESSEE's  good and effects  from the Premises  (including,  without
      hereby limiting the generality of the foregoing, all lettering, affixed or
      painted by the  LESSEE,  either  inside or outside the  Property).  LESSEE
      shall deliver to LESSOR the Premises  (subject to reasonable wear and tear
      and  damage by other  casualty)  and all keys,  locks  thereto,  and other
      fixtures and  equipment  connected  therewith  to the extent  installed by
      LESSOR and

                                      -15-
<PAGE>

      all alterations,  additions and improvements made to or upon the Premises,
      including,  but not  limited to, any  offices,  partitions,  plumbing  and
      plumbing  fixtures,  air  conditioning  equipment  and duct  and  plumbing
      fixtures, air conditioning equipment and duct work of any type, exhaust or
      heaters, burglar alarms, telephone wiring, air or gas distribution piping,
      compressors, to the extent that the foregoing are attached to the walls or
      floors and all  electrical  work,  including but not limited to,  lighting
      fixtures of any type,  wiring conduits,  distribution  panels,  bus ducts,
      raceways,  outlets  and  disconnects.  Lessee  shall not be  obligated  to
      restore the Premises to its pre-occupancy status. LESSEE shall deliver the
      Premises in a clean and neat order and in the same conditions as they were
      at the  commencement  of the term,  or as they were put in during the term
      hereof, reasonable wear and tear and damage by fire or other casualty only
      excepted.  LESSEE  shall  have the  right to remove  any  trade  fixtures,
      equipment  or  personal  property  owned  by  LESSEE  and  located  in the
      Premises.  In the event of LESSEE's failure to remove any of the foregoing
      from the  Premises,  LESSOR is hereby  authorized,  without  liability  to
      LESSEE  for loss or damage  thereto,  and at the sole risk of  LESSEE,  to
      remove and store any such property at LESSEE's  expense,  or to retain the
      same under  LESSOR's  control or to sell at public or private sale without
      notice,  any or all the  property  not so  recovered  and to apply the net
      proceeds  from such sale to the  payment of any sum due  hereunder,  or to
      destroy  such  property  which shall be  conclusively  deemed to have been
      abandoned.

32.   WAIVER
      ------
      One or more waivers of any  covenant,  condition  or  agreement  contained
      herein shall not be construed as a waiver of a further  breach of the same
      covenant,  condition or agreement or of any other  covenant,  condition or
      agreement  and a consent or  approval by one party to any act by the other
      requiring  such consent or approval shall not he deemed a waiver or render
      unnecessary consent or approval to any subsequent similar act.

33.   NO ABATEMENT OF RENT
      --------------------
      The  obligation of LESSEE to make all payments of rent and any  additional
      rent in the form of real estate taxes,  operating costs or otherwise shall
      be  absolute  and  unconditional  and  shall  not be  subject  to set off,
      recoupment  or  counterclaim,  except as expressly  set forth herein or as
      otherwise provided by the laws of the Commonwealth of Massachusetts.

34.   BENEFIT
      -------
      All covenants,  agreements,  conditions and undertakings  under this Lease
      shall extend to and be binding upon the legal representatives,  successors
      and assigns of the respective parties hereto.

35.   GENERAL
      -------
      (A) Every term and  provision of this Lease shall be deemed of the essence
      and every breach thereof material to the LESSOR. (B) All  representations,

                                      -16-
<PAGE>

      warranties  and  agreements  of the  parties in this Lease shall be deemed
      special, unique and extraordinary;  and any breach thereof by the parities
      shall be deemed to cause the other party  irreparable  injury not property
      compensable by damages in an action of law, and the rights and remedies of
      the parties hereunder may therefore be enforced both at law and in equity,
      by  injunction  or  otherwise.  (C) All rights and  remedies of each party
      shall be cumulative and not alternative,  in addition to and not exclusive
      of any other right or remedy to which such party may be lawfully  entitled
      in case of any  breach or  threatened  breach  of any terms or  provisions
      herein except as otherwise  expressly  provided herein. (D) The rights and
      remedies of each party shall be continuing and not exhausted by any one or
      more uses, thereof,  and may be exercised at any time or from time to time
      and as often as maybe expedient; and any option or election to enforce any
      such right or remedy may be  exercised or changed at any time or from time
      to time.  (E) This Lease sets forth the entire  agreement  by the parties,
      and no  custom,  act,  forbearance,  or  words  of  silence  at any  time,
      gratuitous  or  otherwise,  shall  impose  any  additional  obligation  or
      liability  upon  either  party or waive or release  either  party from any
      default  or from the  performance  or  fulfillment  of any  obligation  or
      liability, or operate as against either party as a supplement, alteration,
      amendment or change of any term or provision set forth  herein,  including
      this clause,  unless set forth in a written  instrument  duly  executed by
      such  party  expressly  stating  that it is  intended  to  impose  such an
      additional obligation or liability to constitute such a waiver or release,
      or that it is  intended  to  operate  as  such a  supplement,  alteration,
      amendment  or change.  (F) If any term or  provision  of this Lease or the
      application  thereof to any person,  Property or circumstance shall to any
      extent be invalid or  unenforceable,  the remaining  terms and  provisions
      shall not be affected  thereby,  and each term and provision of this Lease
      shall be valid and enforceable to the fullest extent permitted by Law. (G)
      The various  headings of this Lease Agreement are inserted for convenience
      only and shall not affect the meaning or  interpretation of this Agreement
      or any provision  hereof.  (H) This Lease shall be construed in accordance
      with the laws of the Commonwealth of Massachusetts.

36.   OPTION TO RENEW
      ---------------
      In the event that LESSEE is not in default  beyond any  applicable  notice
      and cure period of any of the  provisions of this Lease at the time of its
      exercise of the option  hereunder and for the period of time continuing to
      the  expiration  of the initial  term of the  initial  term or the renewal
      term,  if any,  the LESSEE  shall have the right and option to extend this
      Lease  for one  additional  term(s)  of five (5)  year(s)  each by  giving
      written  notice of its  desire to so extend  this  Lease one  hundred  and
      eighty (180) days at least prior to the  expiration of the initial term or
      any such renewal  term.  Upon the giving of any such  notice,  the term of
      this Lease shall  automatically  be extended for an  additional  period of
      five (5) year(s)  without the  necessity  for the  execution  of any other
      instrument in  confirmation  thereof.  LESSOR and LESSEE shall execute and
      deliver any such  reasonable  instrument as either may

                                      -17-
<PAGE>

      reasonably  request  for the  purpose  of  confirming  this  Lease and the
      exercise of any such extension  right.  Except for the rights of extension
      which have theretofore been exercised and the rent payable during any such
      extension period,  any such extension shall be upon all of the same terms,
      conditions and provisions  herein  contained.  References in this Lease to
      the term hereof  shall be deemed to include any renewal term for which the
      original term may be so extended.  The base rent due and payable by LESSEE
      during any such  renewal  term  shall be in an amount  equal to 95% of the
      then current  "Fair Market  Value" as defined,  provided  that in no event
      shall  the Base  Rent be less  than the Base  Rent  being  paid by  LESSEE
      immediately  prior to the applicable  renewal term.  For purposes  hereof,
      Fair  Market  Value  means the  annual  rent per for  square  foot for the
      Premises as of the  commencement  of the  applicable  renewal  term that a
      willing  tenant  would  pay,  and a  willing  landlord  would  accept,  in
      arms-length  bona fide  negotiations,  taking into  account any  pertinent
      factors,  including,  but not limited to, the  effective  annual rates per
      leasable square foot for  substantially  comparable  buildings  containing
      manufacturing,  office space under leases  recently or then being  entered
      into in the  Haverhill,  Massachusetts  area.  Within  thirty (30) days of
      LESSOR's  receipt of LESSEE's  exercise of its applicable  renewal option,
      LESSOR  agrees to provide  LESSEE with LESSOR's  initial  estimate of Fair
      Market  Value for the  applicable  renewal  term.  If LESSEE  agrees  with
      LESSOR's estimate of Fair Market Value, LESSEE may accept such estimate by
      delivering  written  notice  to LESSOR  in which  event  Base Rent for the
      applicable  renewal  term shall  equal  LESSOR's  estimate  of Fair Market
      Value.  If LESSEE  disagrees with LESSOR's  estimate of Fair Market Value,
      LESSOR and LESSEE shall  negotiate in good faith to determine  Fair Market
      Value for the thirty (30) day period following  LESSOR's initial estimate.
      If after such period,  LESSOR and LESSEE are still unable to agree on Fair
      Market  Value,  the Fair  Market  Value  shall be settled  by  arbitration
      administered by the American Arbitration  Association under its Commercial
      Arbitration Rules, and judgment on the award rendered by the arbitrator(s)
      may be entered in any court having jurisdiction thereof.

37.   SEVERABILITY
      ------------
      If any  term  or  condition  of this  Lease  be  held  unenforceable,  the
      remaining  terms and  conditions  shall remain binding upon the parties as
      though said unenforceable provision were not contained herein.

38.   RULES AND REGULATIONS
      ---------------------
      LESSEE  agrees to comply with the rules and  regulations  set forth in the
      Addendum I attached  to this Lease as to the use and/or  occupancy  of the
      Premises  and land and  buildings  of which the same form a part,  and the
      same are incorporated by reference herein and made a part of this Lease.

                                      -18-
<PAGE>

39.   ENTIRE AGREEMENT
      ----------------
      This Lease sets forth the entire agreement  between the parties and cannot
      be modified or amended  except in writing duly executed by the  respective
      parties.

40.   RECORDING
      ---------
      A short form version of this Lease shall be recorded in the Essex Registry
      of Deeds, Salem, Essex County, Massachusetts.

41.   ADDENDUM
      --------
      The riders and exhibits  attached hereto are  incorporated  herein by this
      reference.

               Addendum 1       Rules and Regulations
               Addendum 2       LESSOR's and LESSEE's Work
               Addendum 3       LESSEE's Early Termination Right
               Exhibit A        The Premises
               Exhibit B        Estimated Additional Rent Schedule
               Exhibit C        LESSEE's Alterations and Additions Layout

42.   TRUSTEE AS LESSOR
      -----------------
      If the LESSOR is a trust or a trustee or  trustees,  it is agreed  that no
      trustee nor any  beneficiary  under any agreement or  declaration of trust
      under  which said trust  exists or by virtue of which such  trustees  act,
      shall be personally liable under any of the covenants or agreements of the
      parties  expressed herein or implied  hereunder,  or otherwise  because of
      anything  arising from or  connected  with the use and  occupation  of the
      demised  Property  by the  LESSEE and the  parties  agree that any and all
      claims  arising  or  accruing  to them  hereunder  shall be  enforced  and
      satisfied  only  against the assets and  Property of said trust and not in
      any case  against  trustees  or any of them or their  successors  in trust
      individually.

43.   AUTHORITY:
      ---------
      If LESSEE is a corporation,  each person executing this Lease on behalf of
      the LESSEE hereby covenants, represents and warrants that LESSEE is a duly
      incorporated  or duly  qualified  (if  foreign)  corporation  and  validly
      existing  and in good  standing  and is  authorized  to do business in the
      Commonwealth of  Massachusetts  (a copy of evidence thereof to be supplied
      to LESSOR upon  execution  of the Lease and upon  request);  and that each
      person  executing  this  Lease on behalf of LESSEE is an officer of LESSEE
      and that he or she is fully authorized to execute, acknowledge and deliver
      this Lease to LESSOR (a copy of a resolution to that effect to be supplied
      to LESSOR upon execution of this Lease and upon request).

44.   FIRST OPTION FOR ADDITIONAL SPACE.
      ---------------------------------
      The  Landlord  shall  notify  the Tenant  when  additional  space  becomes
      available  in the  building  of which  Lessee is leasing a portion by this
      Lease.  The  notice  shall  contain  the Lease  Price and other  Terms and
      conditions  for

                                      -19-
<PAGE>

      the  Tenants  consideration.  The  Tenant  shall  have  30 days  from  the
      postmarked  date to respond to the Landlord.  Upon Landlords  receipt of a
      positive response from the Tenants, the parties shall negotiate and sign a
      Lease  Amendment  within 30 days or the  Landlord  shall have the right to
      Offer the space to a third party.

      If the  Tenant  does  not  respond  to the  Landlord  by the  31st day the
      Landlord shall have the right to put the space on the market. However, the
      Landlord  shall  notify  the  Tenant  each and every  time  space  becomes
      available within the subject premises.

45.   LESSOR REPRESENTATIONS.
      ----------------------
      LESSOR represents to LESSEE, as an inducement to LESSEE to enter into this
      Lease, as follows:

            (a)  LESSOR is the owner of the  Property  in fee  simple and is not
      aware of any matter  impacting  the title which  would limit or  interfere
      with the LESSEE's use and enjoyment of the Property;

            (b) LESSOR has not received notice from any  governmental  authority
      that the Property is not in compliance with applicable laws;

            (c) LESSOR represents that there is no mortgage currently  affecting
      the Property  (except the mortgage of which LESSOR has provided  notice to
      LESSEE);

            (d) LESSOR  represents that the LESSOR is current on all real estate
      tax obligations to Haverhill;

            (e)  LESSOR  represents  that the  LESSOR  has no  knowledge  of any
      hazardous  materials or hazardous  substances,  as those terms are defined
      under Massachusetts  State Laws and Regulations,  present at the Property;
      and

            (f) LESSOR  represents  that the  Property is served by public water
      and a public sewer system.

                                      -20-
<PAGE>

      IN WITNESS  WHEREOF,  the LESSOR and LESSEE  have  executed or have caused
      their properly  representatives to duly execute on the date and year first
      above  written  intending  this  document  to  take  effect  as  a  sealed
      instrument.

                                               LESSOR:
                                               Adom Realty Trust

         /s/ Stephen A. DeSisto                /s/ Antonio Moda
         ----------------------                ----------------------
         WITNESS                               By:   Antonio Moda
                                               Its:  Trustee

                                               LESSEE:
                                               YDI Wireless, Inc.

         /s/ Philip E. Dowling                 /s/ David L. Renauld
         ----------------------                ----------------------
         WITNESS                               By:   David L. Renauld
                                               Its:  Vice President

                                      -21-
<PAGE>

ADDENDUM I
----------

RULES AND REGULATIONS EXHIBIT
-----------------------------

1.    In the event the  LESSEE  shall  desire  to place any  shades,  coverings,
      decorations,  or the like upon any windows in the leased Property,  LESSEE
      shall only utilize  vertical blinds for such purposes,  which blinds shall
      first  be  approved  by  LESSOR,  said  approval  not  to be  unreasonably
      withheld.

2.    LESSEE hereby  acknowledges  that LESSOR  maintains  high pressure  sodium
      lights on or about the leased Property which provide exterior lighting for
      the safety and  convenience  of all the LESSOR's  tenants and a portion of
      said high pressure sodium lights are regulated by circuit breakers located
      with the leased Property.  LESSEE shall not, at any time during this Lease
      or any  extension  thereof,  in any manner  interfere  with the  automatic
      on/off device for said high pressure sodium lights nor shall LESSEE at any
      time interfere with the electricity being provided to said lights or place
      the  circuit  breakers  with the leased  Property in such a position as to
      prevent electricity from being provided to said lights.

3.    LESSEE shall not obstruct any pedestrian walks, entrances, or exits to the
      building in which the leased Property are situated, or any common areas or
      facilities,  with  anything,  or in any manner  whatsoever,  and shall not
      obstruct any and all  entrances,  exists,  curb cuts, or walks serving the
      land and building of which the leased  Property are a part,  nor create or
      suffer any hazardous condition therein or thereat.

4.    LESSEE shall not leave, place, or dispose of any litter, refuse,  garbage,
      or things  outside  the leased  Property  other than  garbage or refuse in
      containers or receptacles  expressly designate by LESSOR for that purpose,
      as and where so  designated.  All refuse and  garbage  shall be removed by
      LESSEE  from  the  leased  Property  and  deposited  and  disposed  of  in
      containers, in a manner and at time acceptable to LESSOR.

5.    Receiving, shipping, loading, and unloading by LESSEE shall be done at the
      loading dock or docks,  serving the leased Property;  and LESSEE,  and its
      employees, agents or invites shall exercise due care and safety precaution
      with respect to the same.

6.    LESSEE  shall not  conduct,  advertise  or suffer  the  occurrence  of any
      auction sale,  bankruptcy sale, going out of business sale,  distress sale
      or the like at the leased  Property or at the land and  buildings of which
      the leased Property are a part.

                                      -22-
<PAGE>

7.    LESSEE  shall  keep the  leased  Property  clean and free of refuse at all
      times,  shall paint the interior of the leased  Property  when  reasonably
      necessary,  and  shall use pest  extermination  as and when  required  and
      whenever LESSOR shall direct.

8.    LESSOR shall comply with all applicable laws and governmental  authorities
      regarding  this use and occupancy of the leased  Property as said laws may
      from time to time appear and/or be amended.

9.    LESSEE  shall  keep  and  maintain  temperatures  at the  leased  Property
      sufficiently  high to prevent freezing of, or interference  with, any flow
      in pipes in, at, and about the leased Property.

10.   LESSEE shall not attach,  display,  or maintain on the outer walls, doors,
      windows,  or roof of the leased Property or the building of which the same
      form a part, any sign,  awning,  aerial,  lettering matter or thing of any
      kind without  LESSOR's  prior  written  consent which consent shall not be
      unreasonably  withheld.  In the event LESSOR grants approval to LESSEE for
      the display or erection of any sign,  display or  lettering,  LESSEE shall
      maintain  and keep  the  same in good  repair,  good  appearance  and good
      working  order at all  times  and make all  replacements  thereto  as when
      required to keep the same in such condition.

11.   LESSEE shall not use sound device which shall be deemed  objectionable  to
      LESSOR or other  tenants,  including,  but not  limited to loud  speakers,
      microphones, transmitters, amplifiers, or phonographs, which sounds can be
      heard from outside of the leased Property.

12.   LESSEE shall not do anything which may damage the personal property of any
      business  or  occupant  at the  building  in which the leased  Property is
      located or any part  thereof,  or be a nuisance  to their  tenants  locate
      therein.

13.   The plumbing facilities,  drains and lines in or about the leased Property
      shall not be used by LESSEE or anyone  under its  control  for any purpose
      other than that for which they were constructed,  nor shall LESSEE put (or
      dispose  of) any foreign  substance  therein of a kind other than that for
      which such  facility was  specifically  designed,  or permit such event to
      occur;  and all costs and  expenses of  repairing,  replacing or restoring
      said  facilities  or equipment  by reason of any  breakage,  stoppage,  or
      damage  resulting  from a violation  of this  provision  shall be borne by
      LESSEE.

14.   LESSEE  shall  not burn any trash or  garbage  of any kind in or about the
      leased  Property,  the building  and land of which  leased  Property are a
      part,  or within one thousand feet of the outside  property  lines of said
      land and building.

                                      -23-
<PAGE>

15.   LESSEE shall not use nor suffer the use of the respective  portions of the
      land of which leased  premises are a part of any purposes other than those
      designated by LESSOR,  to wit:  parking areas for parking of vehicles used
      in the business  conducted in the leased premises,  employee parking,  and
      parking for business invitees; loading docks for the loading and unloading
      of  vehicles  transporting  material  or  equipment  to or from the leased
      premises;  and curb cut and turn around areas for the unobstructed passage
      of vehicles of and from said areas.

                                                  Initials

                                                  /s/ DLR
                                                  -----------------

                                      -24-
<PAGE>

ADDENDUM II

I. LESSOR'S WORK
   -------------

The LESSOR shall complete prior to the LESSEE taking occupancy the following:

A)    Separation of the electrical power.
B)    Separation of HVAC ducts and piping and controls.
C)    Construct a firewall between the premises from the balance of the building
      including the office space on the first and second floors.

                                                  Initials

                                                  /s/ DLR
                                                  -----------------

                                      -25-
<PAGE>

ADDENDUM III

LESSEE'S EARLY TERMINATION RIGHT
--------------------------------

The LESSEE  shall have the right to terminate  this  Agreement at any time after
the end of the 60th month of the term.  The LESSEE shall provide the LESSOR with
eight  months  advance  notice of the LESSEE's  intent to  terminate  this Lease
Agreement  under this  Addendum III (which notice may be given prior to the 60th
month of the  term).  Upon  termination,  Lessee  shall pay  Lessor a penalty of
$29,220.75   plus  the  remaining   unamortized   portion  of  brokerage   costs
(Amortization  Schedule - Exhibit D). The  brokerage  costs are being  amortized
over the 10-year lease at an 8% interest rate.

                                                  Initials

                                                  /s/ DLR
                                                  -----------------

                                      -26-
<PAGE>

                                    EXHIBIT A

                                  THE PREMISES

                                 Graphic omitted

                                      -27-
<PAGE>

                                    EXHIBIT B

                                 ADDITIONAL RENT
                                 ---------------

                              Estimated Budget 2005
                              ---------------------

Total Building Square Feet 51,800 square feet
Lessee Premises            17,316 square feet
Lessee Pro Rata Share           33.42 percent

CAM Charges                                  Annual       Monthly         PSF
-----------                                  ------       -------         ---

Real Estate Taxes                          $42,000.00   $ 3,500.00    $     0.28
Insurance                                  $ 8,000.00   $   667.00    $     0.15
Snow Removal                               $ 2,200.00   $   183.00    $     0.03
Landscaping                                $ 1,800.00   $   150.00    $     0.03
Common Utilities                           $            $             $
Maintenance and Repairs                    $ 1,000.00   $    84.00    $     0.02
Management Fee                             $23,000.00   $ 1,916.00    $     0.45
                                           ----------   ----------
                                           $78,000.00   $ 6,500.00
                                           =======================
         Cost per SqFt                     $     1.51   $     0.13    $     1.50

CAM + NNN
Cost per SqFt                              $     1.50

LESSEE Annual Pro Rata Share of expenses   $25,974.00
LESSEE Monthly Pro Rata Share of expenses  $ 2,164.50

                                                  Initials

                                                  /s/ DLR
                                                  -------------------

                                      -28-
<PAGE>

                                    EXHIBIT C

                   LESSEE'S ALTERATIONS AND ADDITIONALS LAYOUT
                   -------------------------------------------

                                      -29-[LOGO]TERABEAM WIRELESS

                     881 North King Street, Suite 100, Northampton, MA 01060 USA
                    Phone (413) 584-1425 o Fax (413) 584-2685 o www.terabeam.com
                                                                ----------------

                                                September 30, 2005

Kevin J. Duffy
245 Via La Posada
Los Gatos, CA  95032

Dear Kevin:

      In recognition of your service to Terabeam Wireless / YDI Wireless, Inc.
("Terabeam") and to assist you in your transition to new employment, we would
like to offer to you the following separation terms and benefits. Accordingly,
this letter agreement is intended to confirm our understanding and agreement
with respect to your termination of employment with Terabeam.

      1. Separation Date. Your last day of employment is September 15, 2005 (the
         ---------------
"Separation Date"). Except as provided elsewhere in this letter agreement, your
employment benefits will cease in accordance with the terms of the specific
benefit plans at issue on the Separation Date. Terabeam will reimburse you for
normal business expenses incurred through the Separation Date in accordance with
its normal policy. Notice of your rights with respect to continuation of health
and dental benefits will be provided under separate cover.

      2. Separation Payment. Within two (2) business days from the Effective
         ------------------
Date (as described in paragraph 11 below), Terabeam will pay you the amount of
Seventy-Five Thousand and 00/100 Dollars ($75,000.00) (less all lawful
withholdings and deductions). The separation payment described in this paragraph
is compensation to which you would not otherwise be entitled except under the
terms of this letter agreement.

You will make yourself available to consult with Terabeam personnel without
further compensation on any matters in which you were involved during your
tenure at Terabeam through December 31, 2005 at times and places reasonably
acceptable to you.

      3. Accrued Vacation. You acknowledge that Terabeam has compensated you for
         ----------------
all accrued unused vacation time as of the Separation Date. You will not
continue to accrue vacation time after the Separation Date.

      4. Medical and Dental Insurance Benefit Continuation. Your medical and
         -------------------------------------------------
dental group coverage will continue until September 30, 2005. You will be
eligible to continue those benefits under COBRA. If you elect to do so and you
continue to pay Terabeam the same amount you paid for those coverages while you
were a Terabeam employee, Terabeam will pay the remaining portion of the COBRA
premiums to continue your medical and dental insurance coverage through December
31, 2005. If Terabeam is unable to continue coverage for any reason (including
your becoming ineligible or the benefit plans being terminated), Terabeam's sole
liability to you will be to pay you the amount Terabeam would have paid to
continue the

<PAGE>

Kevin J. Duffy
September 30, 2005
Page 2

insurance coverage. After December 31, 2005, you may elect to continue your
group medical and dental coverage at your own expense under the terms of COBRA.

      5. Terabeam Property. You agree and acknowledge that you have returned to
         -----------------
Terabeam all property of Terabeam. For purposes of this paragraph, "property of
Terabeam" includes, but is not limited to, product prototypes and mockups, keys,
corporate credit cards, passwords, identification cards, equipment, books,
supplies, cellular telephones, personal data assistants, computer programs,
computers, computer files, pictures, products, components, originals and copies
of all corporate documents, including financial records and information, and any
other materials, whether prepared by you or by others, owned by Terabeam or any
of its subsidiaries.

      6. General Release of Claims. In consideration of the provision to you of
         -------------------------
the benefits specified in this letter agreement, you hereby agree and covenant
not to sue and not to make any claims of any kind against Terabeam, its past and
present divisions, subsidiaries, affiliates or related companies, its successors
or assigns and all past and present directors, officers, employees,
shareholders, and agents of these entities (collectively the "Releasees") before
any court or agency or other forum, and you further agree to, and hereby do,
release the Releasees up to the date of execution of this letter agreement for
any claims you may have against them, including, without limitation, any claims
arising under the Americans with Disabilities Act, Title VII of the Civil Rights
Act, the Age Discrimination in Employment Act, or any other federal or state
statute, law, regulation or common law provision governing compensation, age
discrimination, the employment agreement, effective as of July 27, 2005 (the
"Employment Agreement"), between you and Terabeam, or the employment
relationship. This release does not apply to any claims arising solely after the
date of execution of this letter agreement.

You understand and agree that, except as set forth therein, the preceding
paragraph is a full and final release covering all known as well as unknown or
unanticipated debts, claims, or damages you may have against Terabeam or its
related entities. Therefore, you hereby waive any and all rights or benefits
which you may now have, or in the future may have, under the terms of Section
1542 of the California Civil Code which provides as follows (or any other
statute or common law principle with a similar effect):

             A general release does not extend to claims which the
             creditor does not know or suspect to exist in his favor
             at the time of executing the release, which if known by
             him must have materially affected his settlement with
             the debtor.

      7. Opportunity to Review. You acknowledge that you have been given a
         ---------------------
reasonable period of at least twenty-one (21) days in which to consider this
letter agreement prior to signing. You acknowledge that, if you decide to
execute this letter agreement prior to the expiration of the twenty-one (21) day
period, it is solely your decision and Terabeam has not induced you to do so.

<PAGE>

Kevin J. Duffy
September 30, 2005
Page 3

      8. Careful Review and Understanding of Agreement. You represent that you
         ---------------------------------------------
have read carefully and fully understand the terms of this letter agreement.

      9. Opportunity to Consult with Counsel. You acknowledge and represent that
         -----------------------------------
you have been advised to and, to the extent that you have wished to do so, have
consulted counsel of your choice prior to signing this letter agreement.

      10. Free and Voluntary Act. You represent that you are entering into this
          ----------------------
letter agreement freely and voluntarily.

      11. Opportunity to Revoke; Effective Date. You will have up to seven (7)
          -------------------------------------
days following your signing of this letter agreement to revoke your acceptance
by so notifying Terabeam in writing. If Terabeam does not receive a written
revocation during that seven day period, this letter agreement will
automatically take effect on the eighth (8th) day following your signing of it,
which date will be the Effective Date. Notwithstanding any other provision of
this letter agreement to the contrary, all obligations of Terabeam under this
letter agreement are contingent upon the occurrence of, and shall not bind
Terabeam until, the Effective Date.

      12. Survival of Other Agreements. The Employment Agreement is hereby
          ----------------------------
terminated effective September 15, 2005; provided that the provisions of Section
8 of the Employment Agreement shall survive such termination according to their
terms. You acknowledge that any other agreements entered into by you with
Terabeam relating to inventions, non-competition, restrictive covenants, and
confidential and/or proprietary information remain in full force and effect.

      13. Protection of Good Name. You agree that you will not in any way
          -----------------------
disparage or harm the name or reputation of Terabeam, or its past or present
officers, directors, employees, agents or attorneys, in either their personal or
official capacities, either directly or indirectly, or otherwise portray any of
the foregoing in a negative manner.

      14. Complete Agreement. Except as otherwise contemplated by this letter
          ------------------
agreement, this letter agreement represents the complete agreement between you
and Terabeam regarding your separation of employment and supersedes any prior
and contemporaneous agreements, whether oral or written, on that subject.

      15. Severability. Any provision of this letter agreement or attachments,
          ------------
if any, which is found to be prohibited or unenforceable will be treated as
ineffective only to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof.

      16. Interpretation of Agreement. If any dispute regarding the
          ---------------------------
interpretation or application of this letter agreement arises, you agree that it
will be interpreted and construed for all purposes under the internal laws of
the State of Delaware. All disputes arising under or out of this letter
agreement will be brought in courts of competent jurisdiction located within the
State of Delaware. You agree that any breach by you of your obligations under
this letter agreement will result in immediate and irreparable harm to Terabeam
and therefore, in addition to any other

<PAGE>

Kevin J. Duffy
September 30, 2005
Page 4

rights and remedies available to Terabeam for any such breach, Terabeam shall be
entitled to equitable remedies, including, without limitation, specific
performance and injunctive relief.

      If this letter agreement correctly sets forth our agreement with respect
to the foregoing matters, please so indicate by signing below.

                                                     Sincerely yours,

                                                     /s/ Robert E. Fitzgerald

                                                     Robert E. Fitzgerald
                                                     Chief Executive Officer

Agreed to and Accepted:

/s/ Kevin J. Duffy
-----------------------------------------------------
Kevin J. Duffy

Date:  October 20, 2005

                               STATE OF CALIFORNIA

________________, SS.                                     _____________ __, 2005

      Then personally appeared the above named KEVIN J. DUFFY, and acknowledged
the foregoing instrument to be his free act and deed before me.

(Seal)                               _______________________________
                                     Notary Public
                                     Name: ______________________
                                     My Commission Expires: _____________, 20__

Witnessed by:  /s/ Allison Le    10/20/05
               --------------

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