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1987-04-23
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PC-HAM WHATSON.DOC Version 2.0 PAGE 1
PC-HAM Version 2.0
G3ZCZ AMATEUR RADIO CONTEST PACKAGE VERSION 2.0
(C) Copyright 1985, 1986 - All Rights Reserved
By Joe Kasser G3ZCZ
POB 3419,
Silver Spring,
Md., 20901, USA.
PC-HAM is a set of DATA Processing Amateur Radio programs for
the user of a microcomputer in Amateur Radio. The BASIC language
programs may or may not be described in or be based on programs
described in the book, SOFTWARE FOR AMATEUR RADIO written by Joe
Kasser, G3ZCZ, published by TAB Books (Number 1560), Blue Ridge
Summit, Pa., 17214. The DBASE2 programs perform database
operations on logbook information.
PC-HAM is written and supported by Joe Kasser, G3ZCZ.
The program is distributed as a Shareware product. You may
freely copy and share the product with your friends, associates
and other radio hams. If you decide to use the product, you are
asked to become a registered user by sending a QSL card and a
contribution to the author (suggested amount of $36.50 (ie.
half of 73) or equivalent in foreign currency (See registration
form below).
The contribution covers the cost of distribution of the updated
disk, and supports the continual development of "Software for
Amateur Radio". Upon receipt of your contribution, you will
receive one free update disk ), mail (electronic and regular)
support, and notice of further releases. The update disk will
contain any new versions of the software on this disk (converted
programs from Northstar BASIC to IBM) plus new software,
accompanying the series of articles currently being written on
the applications of data processing concepts of microcomputers
to amateur radio.
Under no circumstances may this product be sold or distributed
with another product without the express written permission of
Joe Kasser, G3ZCZ.
Joe Kasser, G3ZCZ will only support unmodified copies of this
software. Your comments and suggestions for changes are however
welcome. If you are the first to suggest a change that is
implemented, you will be sent a complimentary copy of the disk
with the change incorporated.
PC-HAM WHATSON.DOC Version 2.0 PAGE 2
TABLE OF CONTENTS
1.0 INTRODUCTION
2.0 STARTING THE PROGRAM
3.0 RUNNING THE PROGRAM
3.1 Date for Predictions.
3.2 Sunspot Number.
3.3 Output Routing
3.4 Mode Selection
3.4.1 Single PX
3.4.2 Contest Sheet
3.5 Prefix Loading
4.0 NOTES
1.0 INTRODUCTION
WHATSON is a program that can be used to provide predictions of
HF propagation. It is based on a Minimuf devised by P .H
Levine, R. B. Rose, and J. N. Martin and then modified by G3CCZ,
G4LH, G4GKO, 4X4AS and G3ZCZ
The program is based on a particular model. The original
program was published in the March 1983 issue of Radio
Communication (published by the Radio Society of Great Britain
(RSGB)). A number of events can affect actual propagation, so
use the model with foresight.
2.0 STARTING THE PROGRAM
The program is loaded and run in the general manner for loading
and running programs written in BASIC. Thus BASIC must be
loaded first and then the program is loaded. Once the "RUN"
instruction has been given to the computer, it will ask you a
number of questions to determine exactly what you want it to do.
3.0 RUNNING THE PROGRAM
3.1 Date for Predictions.
You will be asked to tell the computer what date the predictions
are for, by the following question.
PC-HAM WHATSON.DOC Version 2.0 PAGE 3
Are predictions for today (Y/N)
If you want the predictions for that date, the program will read
the system calendar. If you want predictions for some other
day, you will be asked to enter that date.
3.2 Sunspot Number.
You will be asked to tell the program what the Sunspot number
for that date is. If you don't know, try getting it from WWV or
the predictions in your favorite Ham magazine.
3.3 Output Routing
You may tell the program to print the output, or just display it
on the CRT screen.
3.4 Mode Selection
The program operates in two modes.
3.4.1 Single PX
The single prefix mode, gives you a display of the
propagation forecast for one call area for one particular
day.
A typical display/printout starts off with a header which
contains the date and sunspot numbers. You QTH and QRA
Square locator information are then given. The program
next shows the path, target area prefix bearing and
distance of the target. The last item on the header is the
date and time that the printout/display was made, again
taken from the system clock/calendar.
The propagation forecast is given for every hour on the
hour. The Highest Possible Frequency (HPF), the Optimum
Usable Frequency (FOT) and the Lowest Usable Frequency
(LUF) are then displayed in a tabular form. When the
display is complete, you are asked if you want to have
another go.
If no propagation is possible at a particular hour, the
display will show dashes instead of a number.
PC-HAM WHATSON.DOC Version 2.0 PAGE 4
----------------------------------------------------------------
DAY: 19 MONTH: 7 SUN SPOT NUMBER: 0
G3ZCZ/4X LOCAL QTH IS:LAT. 31.895 N/LON. 34.791 = KM71JV
SHORT PATH TO K2, BEARING: 314 deg. DISTANCE: 9095 KM
DATE & TIME OF PRINTOUT:07-19-1986/23:12:37
GMT HPF FOT LUF GMT HPF FOT LUF
0 14 14 5 1 ------------
2 ------------ 3 ------------
4 ------------ 5 ------------
6 ------------ 7 ------------
8 ------------ 9 14 14 12
10 15 15 12 11 16 15 12
12 17 16 12 13 18 17 11
14 19 17 11 15 19 17 11
16 20 18 11 17 20 18 11
18 20 18 11 19 19 18 10
20 20 18 9 21 19 17 8
22 17 16 7 23 15 15 5
DO YOU WANT ANOTHER QTH Y/N ?
----------------------------------------------------------------
3.4.2 Contest Sheet
The Contest sheet mode gives you a printout of the
direction and distance as well as the optimum frequency for
propagation every hour on the hour, for every prefix
available. It is designed for use when planning contest
operation, for with it you can see what the most favorable
time for predicted openings to different parts of the world
are, and plan band changes (or rest periods) accordingly.
Take a look at the closest bands to the optimal frequency
and see what gives.
A typical display contains the following data.
PC-HAM WHATSON.DOC Version 2.0 PAGE 5
----------------------------------------------------------------
SHORT PATH OPTIMAL FREQUENCY PREDICTIONS FOR G3ZCZ/4X ON 19 Jul
SUNSPOT NUMBER 0
PX 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
----------------------------------------------------------------
FG7 15 -- -- -- 14 14 -- -- -- -- 16 18 19 20 19 19 19 19 19
FH8 -- -- -- -- -- 15 17 18 18 19 19 18 18 17 17 17 17 17 17
FK8 -- -- 16 18 20 20 20 19 18 23 22 20 19 17 16 15 14 -- --
FM7 15 -- -- -- 14 14 -- -- -- 14 16 18 20 20 19 19 19 19 19
FO8 -- -- 15 17 18 18 18 17 16 15 -- -- -- -- -- -- -- 14 16
FO8Clp 15 -- -- -- 15 16 17 16 15 -- -- -- -- 16 18 19 20 19 19
FP8 15 -- -- -- -- -- 14 16 16 17 18 18 19 19 19 19 19 19 19
FR7 -- -- -- -- 16 18 20 21 22 22 21 20 19 18 18 18 18 18 19
FS7 15 -- -- -- 14 14 -- -- -- -- 16 17 19 20 19 19 19 19 19
FW8 15 -- -- -- -- -- -- -- -- 15 18 20 21 20 19 19 19 19 18
FY7 15 -- -- -- -- -- -- -- -- 15 18 20 21 20 19 19 19 19 18
G 15 -- -- -- 15 16 17 18 19 19 20 20 20 20 20 20 20 20 19
GD 15 -- -- -- 15 16 17 18 18 19 19 20 20 20 20 20 20 20 20
GI -- -- -- -- -- -- -- 14 15 15 15 16 16 16 16 16 16 15 15
GJ 15 -- -- -- 15 16 17 18 19 20 20 20 20 20 20 20 20 20 19
GM -- -- -- -- -- -- -- 14 15 15 15 15 16 16 16 16 15 15 15
GU 15 -- -- -- 15 16 17 18 19 20 20 20 20 20 20 20 20 20 19
---------------------------------------------------------------
3.5 Prefix Loading
The computer will then load the local station geographical data
from the file G3ZCZ.DAT, and then the data associated with all
the remaining amateur prefixes WHATSON.DAT. It will display a
message as follows while that job is going on.
PLEASE STANDBY WHILE PREFIX DATA ARE LOADED
If you elected the Contest mode, it will begin without any
further ado. In the single prefix mode, you will be presented
with the following menu.
PC-HAM WHATSON.DOC Version 2.0 PAGE 6
----------------------------------------------------------------
PREFIX MENU
NBR PX NBR PX NBR PX NBR PX
1 - 1A0KM 18 - 4T 35 - 5X 52 - 8Q
2 - 1S 19 - 4U1ITU 36 - 5Z 53 - 8R
3 - 3A 20 - 4U1UN 37 - 6C 54 - 8Z
4 - 3B6 21 - 4V 38 - 6D 55 - 9G
5 - 3B8 22 - 4W 39 - 6O 56 - 9H
6 - 3B9 23 - 4X 40 - 6T 57 - 9J
7 - 3C 24 - 4Z 41 - 6W 58 - 9K
8 - 3C0 25 - 5A 42 - 6Y 59 - 9L
9 - 3D2 26 - 5B4 43 - 7J 60 - 9M2
10 - 3D6 27 - 5H 44 - 7O 61 - 9M6
11 - 3V8 28 - 5L 45 - 7P 62 - 9M8
12 - 3X 29 - 5N 46 - 7Q 63 - 9N
13 - 3Y 30 - 5R 47 - 7X 64 - 9Q
14 - 4D 31 - 5T 48 - 7Z 65 - 9U
15 - 4J1 32 - 5U 49 - 8J1 66 - 9V
16 - 4N 33 - 5V 50 - 8N 67 - 9X
17 - 4S 34 - 5W 51 - 8P 68 - 9Y
Pick a number corresponding to a prefix (0 will give you further choices )?
---------------------------------------------------------------------------
If you enter the number 0, you will get a further menu of
choices. If you enter 999, you will be asked to redefine your
local geographical co-ordinates. You must run this choice the
first time or the data you generate will have no practical
purposes for your QTH.
4.0 NOTES
The program is based on a mathematical model. In comparing logs
with the predictions, it has been noted that the data tends to
lose accuracy when the path length is greater than 8000 kM or
the path passes over the geographical poles. If you are
interested enough in the further development of the model, why
not compare your logs against the predictions. You should be
able to get hold of sunspot records from magazine back issues
and let me know how they compare.