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World of Ham Radio 1997
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ariel17.doc
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1997-02-01
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A R I E L ver 1.7ß
(c)1992,93 J Scott Hedspeth <WB4YZA>
Disclaimer
This program is offered as FreeWare. No claims are made. The
author assumes no responsibility for anything, for any reason,
etc, etc, etc...
Distribution
Disassembly and/or modification is prohibited. Source code
is not available to the public. ARIEL may be freely copied
and distributed provided this document file is included in its
entire, unmodified state. NO fees may be charged for ARIEL
except for duplication and handling fees not to exceed $1.00US.
Registration
There is none. I tried ShareWare with version 1.5. What I made
in registration fees PLUS 25 cents would buy me a cup of coffee,
and it took more than one cup to write this program.
So, if you want to send me something, the old offer still stands.
That is $5.00 in cash, stamps, bus tokens, rubbles, pesos, or any-
thing of near-equivalent value. If you don't want to send me
anything, take a kid fishing or go feed the ducks.
I will continue to update ARIEL as the mood hits me and as I
learn new programming tricks.
This is the full-blown program, registration doesn't unlock any
hidden features. I don't believe in CrippleWare.
Purpose
Ariel was written with two purposes in mind. First was to
provide a basic design program for high frequency (HF) antennas.
Second was an attempt by the author to gain some experience
with Borland's Turbo Pascal v6.0 <tm> programming language.
Ariel will only design antennas below 30 MHz <my appologies
to K4PKV>. Inputs of "letters" when the program asks for
"numbers" will produce crashes. Holding the <enter> key down
will scroll the display off the screen.
>>>>> Supply valid inputs and you will get valid outputs. <<<<<
If you find a bug in the program, please contact me providing
as much information as possible. However, if you feed it garbage
and it throws up on your feet, don't come crying to me.
Enough said.
Some basic knowledge of antenna theory, general math and wire
antenna construction techniques is recommended. Most of the
antenna designs in this version have been constructed, analyzed
and tested by the author. On-air testing was done on either 21
or 28 MHz. All analysis was done using NOSC's MININEC v3.0,
K6STI's MN v1.65 / v2.05 and W7EL's ELNEC v2.21. These programs
allow modeling of antenna arrays including different types of
terrain and ground conductivity as well as supporting structures.
The primary purpose of this program is to provide a dimensional
starting point for the construction of various HF antennas. It
is recommended that the more complex arrays be modeled by one of
the above programs and fine tuned to your individual location.
No provisions are made for hard copy print outs. You will have
to use the "print screen" function on your computer if you want
a paper copy to work from. It may not print the IBM graphic
characters used for the antennas but will give you a working
copy of the dimensions and associated text information.
The print screen function has produced "actual" copies on the
following printers when properly configured for extended
graphics characters:
HP Deskjet
HP Laserjet
Epson LQ series
No plans are made to add hard copy at this time.
As a bonus <and because I ran out of antennas I could draw with
standard ASCII graphics> I have included some basic RF related
calculation utilities. These include finding the impedance of
a quarter-wave matching section, solving LCF calculations, solar
flux conversions and open-wire transmission line dimensions.
General Information
The current version is available on the WB4YZA BBS <2400/8/N/1>
at 704-284-4854 in File Area #7 - Antennas & Propagation Files.
This is an open BBS with no ratios and no fees. All users welcome.
The author may be contacted via:
WB4YZA BBS:
<C>omment to the Sysop at Main Menu prompt
Mail:
Scott Hedspeth
Rt 4 Box 227
Mocksville, NC 27028
CompuServe:
Scott Hedspeth - 71042,3277
All comments are welcome.
History
v1.0 15 October 1992 - Initial release - FreeWare
v1.1 - v1.4 Changes in preparation for v1.5
not released to public
v1.5 15 November 1992 - Second release
Addition of more antennas
Addition of antenna related calculations
Released as ShareWare
v1.6 01 January 1993 - Compressed code
Corrected gramatical errors
Updated antenna descriptions
Back to FreeWare
v1.7 20 August 1993 - Improved accuracy of some calculations