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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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antenna
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ant_08
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antenna.doc
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1997-02-01
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3KB
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112 lines
WELCOME TO THE K2TV ANTENNA CALCULATOR
copr 1988, Robert W. Myers
This program will calculate the length of a quarter wave
vertical, five eighths wave vertical, half wave dipole, or a
multiband windom antenna and give the results in feet and inches.
To start the program type <antenna> and push the <enter> key on
your keyboard. An opening screen will come up and after reading
the screen push the <enter> key again, a menu will come up asking
which type of antenna you would like to have measurements for and
what is the desired frequency. It is important to enter the
frequency in MegaHertz; for instance if you wanted to calculate
the frequency of a windom antenna for the middle of the forty
meter novice band, select <D> and enter <7.125> and press
<enter>. You will get the results in feet and inches with the
offset feed point also calculated. Be careful to make all
entries in decimal numbers, for example: 7.250, 144.5, 28.475
etc. If you make any calculations for antennas below one
MegaHertz, enter a zero before the decimal point, for example:
0.880, 0.375, 0.640, etc.
I have tried the program at various frequencies and it seems
to be accurate for most Amateur Radio bands up to six meters.
The calculations are rounded off to the nearest inch which should
provide an accuracy that is good enough for the construction of
a practical Amateur Radio antenna installation. The formulas used
for the calculations in this program are the standard antenna
formulas that can be found in any source on antennas. Further
information about the antennas calculated in this program may be
found in the ARRL "Antenna Handbook" or the ARRL "Amateur Radio
Handbook" published by The American Radio Relay League, 225 Main
Street, Newington, CT 06111.
The intent of this program was two fold, first to give me a
chance to practice my Pascal programming and second to provide a
simple program for those that may be interested in designing
antennas, especially when trying to play "what if" in trying to
find an antenna to fit a given space. You may freely copy and
give away this program to others as long as the program is
accompanied by this ANTENNA.DOC file and I would hope that it may
be of use to the Ham Radio community.
There is no Warranty for this program or its use, implied or
otherwise. You use it at your own risk and the author cannot be
held liable for any damages from its use or problems that may
come about from its use or misuse. Please feel free to contact
me with any suggestions or comments about this program, so that I
may make future revisions.
Robert W. Myers, K2TV
317 Kensington ct;
Copiague, New York 11726