Exhibit 10.58  BORROWER NAME AND ADDRESS
  
  LENDER NAME AND ADDRESS
  
  LOAN DESCRIPTIONNumber  44938102           masTower Tech Systems Inc.
  
  Investors Community Bank101 S. l6th St., P.O. Box 1957
  
  860 N. Rapids RoadManitowoc, Wl 54221-1957
  
  P.O. Box 700
  
  Amount  $ 5,500,000.00Manitowoc, Wl 54221-0700Date  03-21-2008  o  Refer to the attached Signature Addendum,
incorporated herein, for additional Borrowers and their signatures.  COMMERCIAL
DEBT MODIFICATION AGREEMENT  DATE AND PARTIES.
The date of this Debt Modification Agreement (Modification) is as of 10-22-2008 DEFINITIONS.   As used in this Modification, the terms have
the following meanings:  Pronouns. The
pronouns I, me, and my refer to each Borrower signing this Modification,
individually and together with their heirs, executors, administrators, successors,
and assigns. You and your refer to the Lender, with its participants or
syndicators, successors and assigns, or any person or entity that acquires an interest
in this Modification or Prior Obligation. Prior Obligation.
Prior Obligation refers to my previous agreement governing my promise to pay
you money, including any loan agreement, note, or document that evidences my
indebtedness, and any extensions, renewals, modifications, and substitutions.  BACKGROUND. You and I
have entered into a Prior Obligation which is evidenced by Note and Agreement  dated  03-21-2008x   in the original principal amount of / o   with a maximum possible principal amount of
$ 5,500,000.00 o  payable on demand. / o  payable on demand but if no demand is made,
by the maturity date of                        .
/ x with a maturity date of 10-22-2008. As of the date of this Modification, thex   amount remaining due is / o
current amount outstanding on the Prior Obligation is $ 1,378,000.00 principal
(Principal) plus $ 1,148.34 accrued interest, for a total of $ 1,379,148,34.  MODIFICATION. For
value received, you and I agree to modify the Prior Obligation as follows.  o  INTEREST RATE
MODIFICATION. o  INTEREST RATE.  Maximum Interest Amount.
Any amount assessed or collected as interest will be limited to the maximum
lawful amount of interest allowed by state or federal law. Amounts collected in
excess of the maximum lawful amount will be applied first to the unpaid
principal balance. Any remainder will be refunded to me. o   Post-Maturity/Default
Interest Rate.  o
Compounding. This Modification provides
for the compounding of interest. o  PAYMENT MODIFICATION.   o  DRAW PERIOD MODIFICATION.   o  FEES AND CHARGES MODIFICATION.   ADDITIONAL TERMS. The maturity date shall change from 10/22/2008 to 4/22/2009.   CONTINUATION OF TERMS. Except as specifically
amended in this Modification, all terms of the Prior Obligation remain in
effect. INTERPRETATION. Whenever used, the singular
includes the plural and the plural includes the singular. The section headings
are for convenience only and are not to be used to interpret or define the
terms of this Modification. VT onlyo   NOTICE TO BORROWER: THIS IS A DEMAND NOTE
AND SO MAY BE COLLECTED BY THE LENDER AT ANY TIME. A NEW NOTE MUTUALLY
AGREED UPON AND SUBSEQUENTLY ISSUED MAY CARRY A HIGHER OR LOWER RATE OF
INTEREST.  x ORAL AGREEMENTS
OR COMMITMENTS TO LOAN MONEY, EXTEND CREDIT OR TO FORBEAR FROM ENFORCING
REPAYMENT OF A DEBT INCLUDING PROMISES TO EXTEND OR RENEW SUCH DEBT ARE NOT
ENFORCEABLE, REGARDLESS OF THE LEGAL THEORY UPON WHICH IT IS BASED THAT IS IN
ANY WAY RELATED TO THE CREDIT AGREEMENT. TO PROTECT YOU (BORROWER/DEBTOR) AND
US (LENDER/SECURED PARTY) FROM MISUNDERSTANDING OR DISAPPOINTMENT, ANY
AGREEMENTS WE REACH COVERING SUCH MATTERS ARE CONTAINED IN THIS WRITING, WHICH
IS THE COMPLETE AND EXCLUSIVE STATEMENT OF THE AGREEMENT BETWEEN US, EXCEPT AS
WE MAY LATER AGREE IN WRITING TO MODIFY IT. BY SIGNING THIS MODIFICATION,
THE PARTIES AFFIRM THAT NO UNWRITTEN ORAL AGREEMENT EXISTS BETWEEN THEM.  SIGNATURES.  
By signing under seal. Borrower agrees to the terms contained in this
Note. Borrower also acknowledges receipt of a copy of this Note. BORROWER:  Tower Tech Systems Inc.Entity Name/s/ Steven A. Huntington
  11/18/08
  (Seal)
  
  
  (Seal)Signature Steven A. Huntington, VP Finance and Treasurer
  Date
  
  Signature
  Date(Seal)
  
  
  (Seal)Signature
  Date
  
  Signature
  DateLENDER:Investors Community BankEntity Name/s/ Robert P. Boerger
  11/18/08
  (Seal)
  
  
  (Seal)Signature Robert P. Boerger, Senior Commercial Lender
  Date
  
  Signature
  DateCOMMERCIAL DEBT MODIFICATION AGREEMENT
  
  
  NOT TO BE USED FOR LOANS SUBJECT TO
  CONSUMER LENDING LAWS   © 1998,
2001 Bankers Systems Inc., St. Cloud, MN Form COMM-DMOD 7/1/2004.  1