The XLZIZL.zip package contains the following files:

Readme.txt
  This file.

Setup.xls
  Run this first.  Unlike a normal setup program, it does not create any new 
  files or make any changes to your system.  It is merely a dummy workbook
  that gives you instructions on how to make sure that Excel is configured
  correctly in order to run the XLZIZL.xls workbook.

  Important:  The Setup and XLZIZL workbooks contain macros.  If you have
  Excel "Macro virus protection" enabled you will see a warning box about
  macros.  You have the option of opening the workbook with macros disabled,
  but then the workbook will not function correctly.  Note that "Macro virus
  protection" is a bit of a misnomer.  Excel does not actually check the
  macros for virus code, it only warns you that macros may be used to contain
  a virus.  You may scan the workbook with an anti-virus program if you want
  to assure yourself that the macros are virus-free.

  In the Setup workbook, the macros merely "turn off" (temporarily) the 
  Standard and Formatting Excel toolbars in order to create additional 
  screen space.  You may wish to use View|Toolbars to hide others that are
  visible.  Personally I hide all toolbars most of the time in order to get
  the maximum amount of usable space.

XLZIZL.xls
  The main work horse.  This workbook contains a "master" sheet named ZIZL,
  five different chart sheets, a worksheet devoted to common impedance
  matching networks, and a few other odds-n-ends worksheets.  Most of the
  number crunching is actually done via Visual Basic for Applications (VBA)
  code rather than more traditional formulas in worksheet cells.  The VBA
  code is also contained in the workbook.

  On the ZIZL sheet and some of the other worksheets, cells or areas where
  user input is expected are marked with a blue border or a blue double line.  
  Areas containing final results of calculations are marked in red.

  Getting started:  The 'Storage' sheet of the XLZIZL workbook contains the
  feedpoint data for one sample antenna, as well as four different feed
  system networks that can be used with that antenna.  You can experiment
  with these networks without doing any antenna modeling yourself.  If your
  interest is more in just transmission lines, try clicking on the "T-Line
  Details" button on the main ZIZL sheet.

  Note to Excel 97 users:  Be sure to see the next to last question in the
  QA.doc file concerning possible updates that may be needed for Excel 97.

  Note to Excel 2000 users:  Excel 2000 must be at the Service Release 1/1a
  level.  If you are not at this level you will see the following symptoms:
    1.  Unable to double-click on the Smith chart in order to change the
        position of the yellow indicator marker.
    2.  The SWR circle on the Smith and R+jX charts will either not show
        or will be aligned incorrectly.
  For more on SR 1/1a see Microsoft Knowledgebase article Q245025 on the MS
  web site.  The update is free and is easily downloaded and installed.

BestFit.xls
  Transmission line loss is usually given by the manufacturer in terms of
  dB/100 feet (or meters) at several different discrete frequencies.  This
  workbook shows the method that was used to convert this information into
  the K1 and K2 loss coefficients needed by XLZIZL in order to interpolate
  to any other frequency. 

QA.doc
  This is a Question and Answer set that I developed for the package, to 
  be used in conjunction with the QRP Quarterly article in lieu of a more 
  formal User Guide.  I hope you’ll find this format easier to digest than 
  a dry recitation of "features and functions and buttons and such."

  When reading the Q and A’s please don’t think for a moment that I am
  trying to "talk down" to anyone.  That was certainly not my intent, nor
  am I even remotely qualified to do so.  My aim was merely to provide a
  pleasant way to learn the capabilities of XLZIZL.

  This document is in Microsoft Word format.  If you don't have Word on
  your PC, a free view/print program may be obtained from the Microsoft web
  site.  Search for "Word Viewer".

[Optional]
Picture.zip
  This is the manuscript draft, including illustrations, for the April 2001
  QRP Quarterly article.  Text and all figures are in Microsoft Word (.doc) 
  format.  If you have not read the Quarterly article please unzip and look
  this over, otherwise it may be discarded.  Note that some of the buttons
  shown in the figures have been moved or eliminated as the program has
  evolved.


73,
Dan Maguire  AC6LA
2150 Louis Holstrom Dr
Morgan Hill, CA  95037
ac6la@arrl.net
