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1995-01-29
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101 lines
WEFAX.EXE - Weather facsimile receiver (Version 1.0)
This weather facsimile program was written in order to provide free software
to those who wish to be capable of recieving pictures without the price of the
professional wefax programs.
** This program is freeware!!! ** and may not be distributed for any price, but
should be distributed for free.
Thisa program does require a special device that is capable of recieving
weather facsimile images.
This program cannot be decompiled or anything like that either.
It was written by Jason Johnson and Todd Hansen, KD6YPS, for use by those wish-
ing to monitor wefax transmissions on HF frequencies.
If any portion of this documentation or the acompanying programs are
changed in any way, then it is illegal to distribute the software.
A user of this software should have knowledge in computers, TNCs, radio
recievers and WEFAX transmissions.
File Listing
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
WEFAX.DOC - This file
WEFAX.EXE - The program
VIEWFAX.EXE - A quick viewer for saved wefax images. (This is not
required and has many errors) [Usage: VIEWFAX <FileName> <CR>]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*** Special notice ***
To use the print fax option, the TSR (terminate and stay resident) program
called GRAPHICS.COM (included with most versions of MS-DOS) must be loaded.
COMMAND LINE PARAMETERS:
~~~~~~~~~~~~~~~~~~~~~~~~
The program accepts command line parameters as follows:
Usage:
From the command line: WEFAX [PORT#] [BAUDRATE]
Where: [BAUDRATE] = Speed to access the comport at.
[PORT#] = # of comport to use. (i.e. 1 for COM1, 2 for COM2,
etc.)
[/? or /HELP] = Show command line help/usage.
Note: If a baudrate or comport number are not given in the command line,
the program defaults to COM2 at 2400 Baud.
Also: Set data sample rate of TNC to 1280 bit samples/sec.
On the Kantronics KPC-3, type the following at the "cmd:" prompt:
WEFAX 1280 [CR]
------------------------------------------------------------------------------
This program was written for non-commercial distribution as freeware.
Since we made this for free, any problems encountered should be reported, but
please note that we are busy and may not be available to help you.
Send any comments, questions, descriptions of problems, or suggestions to:
Todd Hansen, KD6YPS
shansen@cello.gina.calstate.edu
(Don't use this address after 1/96)
Program Usage
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The program starts out in terminal mode with your TNC (Terminal
node controller). After you set your TNC to send you wefax data then
press F1. This will begin to display the graphic. After you have gotten
the image you want on the screen, then you can press any key. This will
bring you to a self explanitory menu. This allows you to save the image,
load another image and view it, print the current image (using
GRAPHICS.COM) and to exit back to terminal. When you are in the terminal
mode, you can press esc, and it will exit you from the program. This is
not a very good terminal program, and should only be used in order to
get your TNC setup to recieve a WEFAX image.
A couple of suggestions for receiving WEFAX images are to read
you owners manual of your TNC and reciever. The receiver must be able to
receive USB (Upper Side Band) transmissions. If your computer makes to
much interferance to your reciever, then turn your computer off, and
record the sound into a tape recorder and play it back into your TNC.
Some possible WEFAX frequencies are 6.630 kHz, 8.080 kHz, 8.646 kHz,
9.158 kHz, 4.346 kHz, 17.151 kHz, 12.730 kHz and 10.185 kHz. Also
remember to use a 1280 bits per second sample rate.
Errors found so far
~~~~~~~~~~~~~~~~~~~~~~~~~~~
After the screen scrolls up in terminal mode, you seem to lose the first
character in every line. This is solved by pressing F1 and then a key
and then pressing D and it will return you back to where you were.
One minor limitation, that can be by passed many ways, is that the
program uses ^C to take the TNC out of WEFAX mode.