


YAGI(1)                  USER COMMANDS                    YAGI(1)



NAME
     yagi - YagiUda project antenna current calculator

SYNOPSIS
     yagi [ - hs ] filename

DESCRIPTION
     The program yagi is one of a number of  executable  programs
     that  forms part of a set of programs, collectively known as
     the Yagi-Uda project , which were designed for analysis  and
     optimisation   of  YagiUda  antennas.  yagi  calculates  the
     currents at the centre of each element at one or  more  fre-
     quencies, as specified in the input file.

OPTIONS
     -h   Print a help message.

     -s   Suppress all diagnostic output. By default, the program
          print the percentage of the job completed.

      filename
          is the name of the file containing the antenna descrip-
          tion.  It  is  expected  to  be  in a format created by
          either input or first  -  two  other  programs  in  the
          YagiUda  project.  This  is  an  ASCII  text  file. The
          antenna currents are written  to  a  file  filename.out
          which  is  a binary file. It is not intended to be read
          by humans.


Limitations
     I'm not aware of any limitations, apart from that filenames,
     including full path, can't exceed 90 characters.

FILES
     filename.out       Binary data file

SEE ALSO
     first(1), input(1), output(1), optimise(1).


PLATFORMS
     Both DOS and Unix versions have been built. The DOS  version
     as  distributed requires a 386 PC with a 387 maths coproces-
     sor.

BUGS
     Bugs should be reported  to  davek@medphys.ucl.ac.uk.   Bugs
     tend  actually to be fixed if they can be isolated, so it is
     in your interest to report them in such a way that they  can
     be  easily  reproduced.  The program gives errors if element
     lengths are well away from a half-wave (by a factor  of  ~3)



Version 1.09        Last change: Fri Dec  2                     1






YAGI(1)                  USER COMMANDS                    YAGI(1)



     due  to  a breakdown in the equations.  If the input file is
     edited  manually  and  done  incorrectly,   there   can   be
     unpredictable results.


COPYING
     This program is public domain,  but 4 of the source routines
     are copyrighted.  In order to build, you will need to obtain
     the routines cisi.c, complex.c, lubksb.c  and  ludcmp.c  for
     the  book 'Numerical Recipes in C', 2nd edition, by Press et
     al, Cambridge University Press, (1992).

     You may copy the sources (less those 4) and  executables  to
     anyone  you wish in the usual unix tradition, as long as you
     let people know they can get the sources and don't make  any
     profit from it. You may charge a *small* distribution fee.



AUTHORS
     Dave Kirkby G8WRB (davek@medphys.ucl.ac.uk), with help  with
     converting     to     DOS     from     Joe     Mack     NA3T
     (mack@fcrfv2.ncifcrf.gov).
































Version 1.09        Last change: Fri Dec  2                     2



