ARRL ANTENNA BOOK - 24th EDITION 
ARRL MODELING FILES

1.  This set of EZNEC modeling files represent many of the antennas discussed in the Antenna Book.  
The models are grouped in folders named for the type of antenna they represent.  

To use these files, run EZNEC and click the OPEN button, use the Browse window to navigate 
to these files and then select one of the files.

Specially signed example files were originally created for EZNEC-ARRL 4.0 or EZNEC-ARRL 5.0, 
free EZNEC demonstration software included with the 22nd and prior editions of the Antenna Book.
That software is no longer available, but the EZNEC v.6.0 demo version will provide the same special 
functionality described below. They can also be opened with and run by any version of EZNEC, 
with segment limits appropriate to the program type. Free EZNEC demo software is 
available at www.eznec.com.

The specially signed files can be recognized by the file name prefix "ARRL_". 
The EZNEC v.6.0 demo software normally has a limit of 20 segments. When one of these files
"ARRL_" files is opened, EZNEC v.6.0 demo version operation changes as follows:

1. The segment limit is raised to 500, and the "File" line in the main window
changes color to indicate this 500 segment mode.

2. Combine and Import options are disabled.

For more information, see www.eznec.com/eznec_arrl.htm

If you are using EZNEC-ARRL or the EZNEC v.6.0 demo version and wish to use the 
more complex model files, EZNEC software can be obtained at www.eznec.com.


2.  MANUAL COPY OF ARRL ANTENNA MODELING FILES TO EZNEC PROGRAM FILES
 
ARRL Antenna Modeling Files are installed with a Typical Antenna Book setup and may
be installed with a Custom Antenna Book setup. The default folder for the modeling files
is C:\Program Files (x86)\ARRL AntBook24\ARRL Antenna Modeling Files.

Once the Antenna Modeling Files are installed, they can be accessed by EZNEC using the 
File > Open menu operation. The files may also be manually copied into the 
EZNEC Program Files folder.
