---
name: "input"
section: "5"
platform: "linux"
package: "yagiuda"
version: "1.19-12"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/input/5"
---

# input(5)

input data file format

## NAME

input - input data file format

## DESCRIPTION

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
```

## FILES

	filename                            ASCII description of antenna.\
 	filename.out                        binary file

## SEE ALSO

[yagi(1)](/yagi/1.md), [output(1)](/output/1.md), [input(1)](/input/1.md), [optimise(1)](/optimise/1.md), [first(1)](/first/1.md) and [yagi(5)](/yagi/5.md).

## AUTHORS

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