Document:

EXHIBIT 10.02(b)

                                 AMENDMENT NO. 2

                                       TO

                              MANAGEMENT AGREEMENT

      WHEREAS, DEMETER MANAGEMENT CORPORATION, a Delaware corporation (the
"General Partner") on behalf of MORGAN STANLEY SPECTRUM TECHNICAL L.P., a
Delaware limited partnership (formerly, Dean Witter Spectrum Technical L.P.)
(the "Partnership"), and CAMPEBLL & COMPANY, INC., a Maryland corporation (the
"Trading Manager"), have agreed to amend the Management Agreement, dated
November 1, 1994 (the "Management Agreement"), among the Partnership, the
General Partner, and the Trading Manager, to incorporate confidentiality
provisions as part of Section 1, "Undertakings in Connection with the Continuing
Offering of Units" .

      WHEREAS, all provisions contained in the Management Agreement remain in
full force and effect and are modified only to the extent necessary to provide
for the amendment set forth below.

      NOW, THEREFORE, the parties hereto hereby amend Section 1 - Undertakings
in Connection with the Continuing Offering of Units, of the Management
Agreement, by adding the following language:

      (c) For purposes of this Agreement, and notwithstanding any of the
provisions hereof, all non-public information relating to the Trading Manager
including, but not limited to, records whether original, duplicated
computerized, handwritten, or in any other form, and information contained
therein, business and/or marketing and/or sales plans and proposals, names of
past and current clients, names of past, current and prospective contacts,
trading methodologies, systems, strategies and research data bases, portfolios,
and computer software, and all written and oral information, furnished by the
Trading Manager to the Partnership or the General Partner and/ or their
officers, directors, Members, employees, agents (including, but not limited to,
attorneys, consultants, service consultants and financial advisors) or
controlling persons (each a "Recipient"), whether furnished before or after the
date hereof, and regardless of the manner in which it was furnished, together
with any analysis, compilations, studies or other documents or records which are
prepared by a Recipient of such information and which contain or are generated
from such information, regardless of whether explicitly identified as
confidential, with the exception of information which (i) is or becomes
generally available to the public other than as a result of acts by the
Recipient in violation of this Agreement, (ii) is in possession of the Recipient
prior to its disclosure pursuant to the terms hereof, or (iii) is or becomes
available to the Recipient from a source that is not bound by a confidentiality
agreement with regard to such information or by any other legal obligation of
confidentiality prohibiting such disclosure, are and shall be confidential
information and/or trade secrets and the exclusive property of the Trading
Manager ("Confidential Information" and/or "Proprietary Information").

      (d) The Partnership and the General Partner each warrants and agrees that
they and their respective officers, directors, Members, employees and agents
(including for purposes of this Agreement, but not limited to, attorneys,
accountants, and service consultants) will protect and preserve the Confidential
Information and will disclose Confidential Information or otherwise make
Confidential Information available only to the Partnership or the General
Partner's officers, employees, directors, Members and agents, who need to know
the Confidential Information (or any part of it) for the purpose of satisfying
its fiduciary, reporting, filing or other obligations hereunder or to monitor
performance in the account during the term of this Agreement or thereafter,
unless the Partnership, General Partner or a Recipient, as the case may be, is
required to disclose it by judicial process. Additionally, the Partnership and
the General Partner each warrants and agrees that it and any Recipient will use
the Confidential Information solely for the purpose of satisfying the
Partnership or the General Partner's obligations under this Agreement and not in
a manner which violates the terms of this Agreement.

      IN WITNESS WHEREOF, this Amendment to the Management Agreement has been
executed for and on behalf of the undersigned as of the 13th day of June, 2006.

                              MORGAN STANLEY SPECTRUM TECHNICAL L.P.

                              By:  Demeter Management Corporation,
                                   General Partner

                              By:      /s/ Walter Davis
                                  --------------------------------------
                                    Name:  Walter Davis
                                    Title: Chairman and President

                              DEMETER MANAGEMENT CORPORATION

                              By:      /s/ Walter Davis
                                  --------------------------------------
                                    Name:  Walter Davis
                                    Title: Chairman and President

                              CAMPBELL & COMPANY, INC.

                              By:      /s/ Thomas P. Lloyd
                                  --------------------------------------
                                    Name:  Thomas P. Lloyd
                                    Title: General Counsel

                              By:      /s/ Theresa D. Becks
                                  --------------------------------------
                                    Name:  Theresa D. Becks
                                    Title: Chief Financial Officersec document

                                                                   Exhibit 10.53

NORTH FORK BUSINESS CAPITAL

                                  June 13, 2006

Del Global Technologies Corp.
One Commerce Park
Valhalla, New York 10595

Re:      Loan and Security Agreement by and among Del Global Technologies Corp.,
         Del Medical Imaging Corp., RFI Corporation and North Fork Business
         Capital Corporation

Gentlemen:

         Reference is made to the Loan and Security Agreement dated as of August
1, 2005 (as amended from time to time, the "Loan  Agreement"),  by and among Del
Global  Technologies Corp., Del Medical Imaging Corp., and RFI Corporation (each
a "Borrower" and collectively the "Borrowers"),  and North Fork Business Capital
Corporation  (hereinafter  referred to as the "Lender").  All capitalized  terms
used but not defined herein shall have the meanings assigned to them in the Loan
Agreement.

         Borrowers  have  advised  Lender that Events of Default  have  occurred
under  Sections 9.1 of the Loan  Agreement as a result of Borrowers'  failure to
comply with the financial  covenants set forth in the following  Sections of the
Loan Agreement for the measurement period ended April 29, 2006:  Sections 8.1(b)
(Adjusted U.S. Earnings);  8.2(b) (Adjusted Earnings);  8.3(b) (Senior U.S. Debt
Ratio);  8.4 (Senior Debt Ratio);  8.5(b) (Fixed  Charge  Coverage  Ratio);  8.6
(Tangible Net Worth); and 8.7 (Capital  Expenditures).  Borrowers have requested
that the Lender waive  compliance  with,  or any Events of Default  arising from
breaches of such  covenants.  Pursuant to  Borrowers'  request and in accordance
with the conditions  contained herein, the Lender hereby waives compliance with,
or any Events of Default  arising from breaches of such covenants for the period
ended April 29, 2006.

         The  agreement  of the Lender set forth in this  letter is limited  and
shall not be deemed to be an agreement, consent or waiver of (i) any other term,
condition or obligation of the Borrowers  under the Loan  Agreement or any other
Loan Document or (ii) any other act, event or condition (whether now existing or
hereafter occurring),  or prejudice any right or remedy which the Lender may now
have or have in the future under or in connection with the Loan  Agreement,  any
Loan Document or any other security  provided by any Person in respect  thereof.
The  agreement,  consent and waivers of the Lender set forth in this letter only
apply to the  waivers  specifically  set forth  herein.  Additionally,  Lender's
agreement  to waive the Events of Default set forth herein is  conditioned  upon
(i)  Borrowers  paying to Lender a waiver  fee in the amount of $20,000 no later
than November 1, 2006; and (ii) the immediate  termination of Borrowers'  option
to  request  LIBOR  Rate  Advances  until  such  time  as  Lender,  in its  sole
discretion, determines to allow such advances.

NORTH FORK BUSINESS CAPITAL

         Except  as  expressly  stated  herein,  the  Lender  reserves  all  its
respective rights,  privileges and remedies under the Loan Agreement,  the other
Loan Documents and any other contracts or instruments  executed by Borrowers for
the benefit of the Lender and the Borrowers acknowledge that all representations
and  warranties  contained in the Loan  Agreement  and the other Loan  Documents
remain in full force and effect.  In order to induce the Lender to execute  this
letter, the Borrowers accept and agree to each provision of this letter.

         This  letter may be  executed  in any number of  counterparts,  each of
which when so executed and  delivered  shall be deemed to be an original and all
of  which  counterparts  taken  together  shall  constitute  one  and  the  same
instrument.  Notwithstanding  any provision of this letter,  this letter and the
waivers  herein  provided  shall not be effective in whole or in part unless and
until the Lender  shall have  received an original of this letter which has been
duly signed by the  Borrowers,  and the Lender may withdraw  this letter and the
waivers herein provided at any time before Lender's receipt of Borrowers' signed
copy of this letter.

         This letter is executed as of the date first written above,

                                              Very truly yours,

                                              NORTH FORK BUSINESS CAPITAL
                                              CORPORATION, as Lender

                                              By:   /s/ Jason I. Rosenberg
                                                  ------------------------------
                                              Name:  Jason I. Rosenberg
                                                    ----------------------------
                                              Title:  Vice President
                                                     ---------------------------

AGREED AND ACKNOWLEDGED:

Del Global Technologies Corp.

By:   /s/ Mark A. Koch
    ------------------------------
Name:   Mark A. Koch
      ----------------------------
Title:  Treasurer
       ---------------------------

Del Medical Imaging Corp.

By:   /s/ Mark A. Koch
    ------------------------------
Name:  Mark A. Koch
      ----------------------------
Title:  Treasurer
       ---------------------------

NORTH FORK BUSINESS CAPITAL

RFI Corporation

By:   /s/ Mark A. Koch
    ------------------------------
Name:  Mark A. Koch
      ----------------------------
Title:  Treasurer
       ---------------------------

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