Exhibit 10.1
                                                                  ------------
                               SECOND AMENDMENT TO
                                 LOAN AGREEMENT


     THIS SECOND  AMENDMENT TO LOAN AGREEMENT  (the "Second  Amendment") is
and  entered  into  this  15th day of  February,  2001,  by and  between  HE
INDUSTRIES,  INC., a Delaware corporation,  having offices at 10 Industry Dr
Lancaster,  Pennsylvania  17603 (the  "Borrower")  and ALLFIRST BANK, a Mary
state-chartered  commercial  bank  successor  to  The  First  National  Bank
Maryland, a division of FMB Bank, having offices at 1703 Oregon Pike, Lancas
Pennsylvania 17601 (the "Lender").

                              B A C K G R O U N D:

     A. Borrower has borrowed from Lender and desires to continue to borrow
Lender in  connection  with the operation of Its  business(es).  On February
1999 the parties entered Into a Loan Agreement  relative to a Revolving Loan
a Mortgage Loan (the  "Agreement").  On January 11th,  2000, the parties ent
into an Amendment to Loan Agreement (the "Amendment") relative to the Agreem
The Agreement and Amendment are incorporated herein by reference and made a
hereof.  All capitalized terms used herein without  definition which are def
in the Agreement shall have the meanings set forth therein.

     B. The parties desire to further amend the Agreement.

     C. Borrower has no defense, charge defalcation, claim, plea, demand or
off against the Agreement, Amendment or any of the Loan Documents.

     NOW,  THEREFORE,  for  valuable  consideration,  receipt of which is he
acknowledged,  and  intending to be legally  bound  hereby,  the parties  he
covenant and agree as follows:

          1. That the above Background is incorporated herein by reference.

          2. That Section 1.1 of the  Agreement is amended to extend the cur
     Revolving Loan Maturity Date from January 31, 2002 to January 31, 2003.

          3. That the terms and conditions,  paragraph sections,  collateral
     guaranty requirements, representations and warranties of the Agreement,
     Amendment  and Loan  Documents,  together  with all  understandings  by
     between the parties to this Second  Amendment  evidenced by writings of
     same or subsequent date not in conflict with the above  modifications u
     this  Second  Amendment  shall  remain  In full  force  and  effect  as
     agreement of the parties  relative to the Loans,  and are hereby  ratif
     reaffirmed and confirmed.

          4. That all  references  to the  Agreement,  the  Amendment,  the
     Documents and the other documents and Instruments  delivered pursuant t
     in  connection  therewith as well as in writings of the same or  subseq
     date,  shall mean the  Agreement  as amended  hereby and as each may in
     future be amended,  restated,  supplemented  or modified from time to t
     Similarly,  all  references  to The  First  National  Bank of  Maryland
     division  of FMB  Bank,  shall be  deemed to have been made and to refe
     Allfirst Bank, successor to The First National Bank of Maryland, a divi
     of FMB Bank.

          5. That the parties  hereto shall,  at any time, and from time to
     following the execution of this Second  Amendment,  execute and deliver
     such  further  instruments  and  take  all such  further  action  as ma
     reasonably necessary or appropriate in order to carry out the provision
     this Second Amendment, as well as in the Amendment.








     IN WITNESS WHEREOF, the parties hereto have caused this Second Amendmen
be executed by their  respective duly authorized  officers all as of the day
year first above written.

    ATTEST:                            HERLEY INDUSTRIES, INC.
                                        a Delaware corporation



    ________________________           By:________________________

    Title:__________________           Title:_____________________



    ________________________           By:________________________

    Title:__________________           Title:_____________________



                                       ALLFIRST BANK, successor to The First
                                       National Bank of Maryland, a Division
                                       of FMB Bank



                                       By:__________________________________

                                       Title:_______________________________