     Instructions for Software/Data on Accompanying Diskette

The companion disk for the 18th Edition of The ARRL Antenna Book 
includes software associated with several areas of the book (to 
find the programs in the book itself, look in the index under 
"Programs:").

Please use the INSTALL program on this disk to copy the files to 
your hard disk. If you place the disk into the A: drive, you 
would type A:INSTALL <Enter>, while logged onto your hard disk, 
usually the C: drive. Although you may override it, the default 
subdirectory INSTALL creates on your hard drive is C:\ANTBOOK, 
with 5 subdirectories beneath it:

\ANTBOOK\GENERAL
\ANTBOOK\PROPAGAT
\ANTBOOK\TERRAIN
\ANTBOOK\XMSNLINE
\ANTBOOK\YAGIS

Listed below are short descriptions of the archive files.

IN THE \ANTBOOK\GENERAL SUBDIRECTORY:

EFFLEN.FOR is described in Chapter 2. It is an ASCII Fortran file 
that illustrates the principle behind the Schelkunoff algorithm. 
This converts a tapered element into a single "monotaper" that 
can be modeled with a method-of-moments program like NEC-2 or its 
derivatives.

GAMMA.BAS is described in Chapter 25. It is an ASCII text file 
that can be run in QBASIC or GWBASIC to compute the parameters 
for a gamma match. 

MOBILE.EXE is described in Chapter 6. This is a terrific program 
by Leon Braskamp, AA6GL, for evaluating and designing mobile whip 
antennas and the coils used for loading these short antennas. 

IN THE \ANTBOOK\PROPAGAT SUBDIRECTORY:

W0-PROP.EXE, W1-PROP.EXE, W2-PROP.EXE, W3-PROP.EXE, W4-PROP.EXE,
W5-PROP.EXE, W6-PROP.EXE, W7-PROP.EXE, W8-PROP.EXE, W9-PROP.EXE

These archives contain propagation prediction tables valid from 
the transmitting site indicated in the filename to seven 
receiving locations throughout the world. Normally, the user 
would select a single transmitting site closest to his/her 
location. The locations inside the archives are organized 
geographically by ARRL divisions:

W1:  Boston, MA--New England Division, Eastern Canada and eastern 
     Hudson Division
W2:  Buffalo, NY--western Hudson Division and eastern Ontario, 
     Canada
W3:  Washington, DC--Atlantic Division
W4F: Miami, FL--Southeastern Division, Northern Caribbean
W4G: Atlanta, GA--Roanoke Division
W5T: Dallas, TX--West Gulf and Delta Divisions
W6L: Los Angeles--Southwestern Division
W6S: San Francisco--Pacific Division (without KH6)
W7W: Seattle, WA--Northwestern Division
W8:  Cincinnati, OH--Great Lakes Division
W9:  Chicago, IL--Central Division and Ontario, Canada
W0C: Denver, CO--Rocky Mountain Division
W0N: Bismarck, ND--Dakota and Midwest Divisions, and Canadian 
     plains 

Each transmitting location is organized by five levels of solar 
activity over the whole 11-year solar cycle: 

VL (Very Low: SSN between 0 to 20)
LO (Low: SSN between 20 to 40)
ME (Medium: SSN between 40 to 60)
HI (High: SSN between 60 to 100)
VH (Very High: SSN between 100 to 150) 

The seven generalized locations throughout the world are: 

EU = Europe (CQ Zones 14, 15, 16, 20 and 40)
FE = Far East (CQ Zones 19, 24, 25, 26 and 28)
SA = South America (CQ Zones 7, 8, 9, 10, 11, 12 and 13)
AF = Africa (CQ Zones 33, 34, 35, 36, 37, 38 and 39)
AS = central Asia (CQ Zones 17, 18, 21, 22 and 23)
OC = Oceania (CQ Zones 27, 29, 30, 31 and 32)
NA = North America (CQ Zones 1, 2, 3, 4, 5 and 6). 

For example, the filename W1VHEU.PRN indicates that the 
transmitting location is in New England (W1), the level of solar 
activity is Very High, and that the target receiving location is 
all of Europe. W3VLAS.PRN indicates that the transmitting site is 
in W3, the solar activity is Very Low, and the receiving location 
is in central Asia. 

These PRN files show the highest predicted signal strength (in S-
units) throughout the generalized receiving area, for a 1500-W 
transmitter and rather good antennas on both sides of the 
circuit. The standard antennas are 100-foot high inverted-V 
dipoles for 80 and 40 meters, a 3-element Yagi at 100 feet for 20 
meters, and a 4-element Yagi at 60 feet for 15 and 10 meters. 

Discount the S-Meter readings to reflect a smaller station: 

Subtract 2 S units for a dipole instead of a Yagi
Subtract 3 S units for a dipole at 50 feet instead of a Yagi
Subtract 1 S unit for a dipole at 50 feet rather than a dipole at 
   100 feet
Subtract 3 S units for 100 W rather than 1500 W. 

Note that each S-unit level shown will be the highest one 
occuring in any of the CQ Zones applicable for that general 
geographic area. For example, for central Asia (AS), if the 
signal level is highest at a particular time and frequency from 
Zone 21 in Saudi Arabia, then that level will be printed, even if 
the signals from the other zones (17, 18, 22 and 23) in central 
Asia are weak or even non-existent at that time. 

Each PRN file can be printed using a word processor that has the 
ability to use different typeface fonts. In Windows 3.1, the 
Windows Write program will work in landscape mode, using MS 
Linedraw or Courier fonts. In Windows 95, WordPad can be used 
with the same conditions. The printout will be rather small but 
still quite readable. 

For a far nicer printout, a style template "SMETER.DOT" has been 
included for Microsoft Word. To use this style template, first 
place it in the template subdirectory. (For a standard Word for 
Windows installation, that would be in the \WINWORD\TEMPLATE 
subdirectory.) Then use Tools | Macro | Organizer | CloseFile 
(left side) | OpenFile (left side) | SMeter.DOT | CloseFile 
(right side) | OpenFile (right side) | NORMAL.DOT | Copy >> | 
CloseFile (right side) | Close (bottom). The SMeter macro will 
now be available in the NORMAL style after a file has been Opened 
in text mode. Simply select Tools | Macro | SMeter and the data 
will be automatically formatted.

IN THE \ANTBOOK\TERRAIN SUBDIRECTORY:

TERRAIN.EXE

This archive contains the YT program and sample terrain data for 
evaluating the effect of uneven local terrain on the launch of HF 
signals throughout the world. See YT.TXT documentation file on 
disk. The program YT is described in detail in Chapter 3.

AFRICA.EXE, ASIA.EXE, EAST-USA.EXE, EUROPE.EXE, MID-USA.EXE, 
NOAMER.EXE, OCEANIA.EXE, SOAMER.EXE, WEST-USA.EXE

These archives contain statistical elevation angles computed for 
the full 11-year solar cycle from transmitting sites indicated by 
the filename. The statistical files are used with the YT program. 
During installation, the operator would normally choose one of 
the archive files that is closest to his/her transmitting QTH. 
The statistical files in NOAMER.EXE are Alaska, Mexico, and VP2E. 
If you are in the USA, use either the EAST-USA.EXE, MID-USA.EXE 
or WEST-USA.EXE archive. 

IN THE \ANTBOOK\XMSNLINE SUBDIRECTORY:

XMSNLINE.EXE

This archive contains two sets of files: TLA.EXE and TLA.TXT, 
described in Chapter 24, and AAT.EXE and AAT.TXT, described in 
Chapter 25. TLA (short for Tranmission Line, Advanced) computes 
many parameters for transmission lines and antenna-tuners--
including detailed losses and stresses. 

The AAT program automatically evaluates antenna tuner networks 
over a very wide range of load impedances. You would use a word 
processing program to read the two output ASCII files. 

IN THE \ANTBOOK\YAGIS SUBDIRECTORY:

YAGIS.EXE

This archive contains the well-known YA (Yagi Analyzer) program 
by Brian Beezley, K6STI, plus 80 optimized Yagi antenna designs. 
See YA.TXT for documentation. YA is described in Chapter 11. 

Each of the archive files has been compressed using LHA, an 
archiving program by Haruyasu Yoshizaki (LHA version 2.13, 
copyright Haruyasu Yoshizaki, 1988-91).

73,

Dean Straw, N6BV
The ARRL Antenna Book Editor
email: n6bv@arrl.org
