input - input data file format

This manual page describes the output format of the file created by the Yagi-Uda project input or first programs. The file is an ASCII file, so can be edited manually if required. It is read by yagi or optimise. The program optimise also creates the same file format.

NOTES FREQUENCY MIN_FREQUENCY MAX_FREQUENCY STEP_FREQUENCY ELEMENTS DRIVEN PARASITIC ANGULAR_STEP DATA_DRIVEN DATA_PARASITIC

The # is used as a comment.

A typical file, for an antenna designed for the 2m amateur band (144-146 MHz) might be as shown below. Note: 1) Reflector is at position 0.0 2) All elements lengths/positions are in m.

NOTES This line can be up to 400 characters.
FREQUENCY 145.000000
MIN_FREQUENCY 144.000000
MAX_FREQUENCY 146.000000
STEP_FREQUENCY 0.100000
ELEMENTS 10
DRIVEN 1
PARASITIC 9
ANGULAR_STEP   180.000000
#DATA_DRIVEN x y length  diameter voltage phase
DATA_DRIVEN  0.30993 0.000000 1.002492 0.0063000000000000 1.000000 0.000000                           
# DATA_PARASITIC x y length  diameter
DATA_PARASITIC
   0.00000    0.00000    1.01902    0.00630                               
   0.49859    0.00000    0.95551    0.00630                               
   1.07338    0.00000    0.93595    0.00630                               
   1.81020    0.00000    0.92050    0.00630                               
   2.58152    0.00000    0.91322    0.00630                               
   3.30390    0.00000    0.91243    0.00630                               
   4.03692    0.00000    0.90423    0.00630                               
   4.64108    0.00000    0.89081    0.00630                               
   5.37418    0.00000    0.83912    0.00630                               

filename ASCII description of antenna. filename.out binary file

yagi(1), output(1), input(1), optimise(1), first(1) and yagi(5).

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