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YAGI(1)			    General Commands Manual		       YAGI(1)

NAME
       yagi - Yagi-Uda project antenna current calculator

SYNOPSIS
       yagi [ -	dhps ] 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 Yagi-Uda antennas.
       yagi calculates the currents at the centre of each element  at  one  or
       more frequencies, as specified in the input file.

AVAILABILITY
OPTIONS
       -d     Display  element currents. When this option is used, a bar graph
	      with up to 70 stars (*) is used to display the  absolute	magni-
	      tude of the element currents. The	element	with the greatest ele-
	      ment current has 70 *'s, all others have a corresponding smaller
	      number,  depending  on  the  their relative current. The element
	      current, normallised to the maximum, is also shown as a 4	 digit
	      floating point number.

       -h     Print a help message.

       -p     Print  the Z matrix. The Z matrix	is the impedance matrix, show-
	      ing the self impedance of	the elements on	the diagonal  and  the
	      mutual impedance off the diagonal.

       -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  description.  It
	      is expected to be	in a format created by either input or first -
	      two other	programs in the	Yagi-Uda project.  This	 is  an	 ASCII
	      text  file.  The	antenna	 currents  are written to a file file-
	      name.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),  first(5),  input(5),  out-
       put(5) and optimise(5).

PLATFORMS
       Both DOS	and Unix versions have been built. The DOS version as distrib-
       uted requires a 386 PC with a 387 maths coprocessor.

BUGS
       Bugs should be reported to david.kirkby@onetel.net.  Bugs tend actually
       to  be  fixed if	they can be isolated, so it is in your interest	to re-
       port them in such a way that they can be	easily reproduced.  If the in-
       put  file  is edited manually and done incorrectly, there can be	unpre-
       dictable	results.

AUTHORS
       Dr. David Kirkby	G8WRB (david.kirkby@onetel.net), with help  with  con-
       verting to DOS from Dr. Joe Mack	NA3T (mack@fcrfv2.ncifcrf.gov).

Version	1.16		      24th October 2000			       YAGI(1)

NAME | SYNOPSIS | DESCRIPTION | AVAILABILITY | OPTIONS | Limitations | FILES | SEE ALSO | PLATFORMS | BUGS | AUTHORS

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