SWBC INTERVAL SIGNALS version 1.0
PUBLIC DOMAIN SOFTWARE - Copyright (c) 23 Jul 91, FineWare, Inc.

Welcome to SWBC Interval Signals v1.0. The system requirements
for operation of this program are an MS-DOS Computer with at least
256k of memory and a Color Graphics Adapter (CGA). The distribution
file INTSIG10.ZIP should contain the following:

IS.EXE - The SWBC Interval Signal v1.0 program
SIGxxx.SI1 - Interim interval signal data files (79).
SIGFIX.EXE - interval signal data file converter.
INTSIG.DOC - This Text

PURPOSE. There has been a minor uproar to the fact that the
World Radio TV Handbook (WRTH) has omitted the interval signal music
in its 1991 Edition. The data files in this package contain 79 inter-
val signals compiled from past editions of the WRTH as far back as
1979. Instead of providing raw printed music, however, the data files
are constructed such that they may be played through your PC's
speaker.

SETUP. First, it is suggested that the following commands are
included in the user's CONFIG.SYS file:

DEVICE=ANSI.SYS
FILES=20
BUFFERS=15

Second, if a hard disk is being used to run SWBC Interval Sig-
nals, make a subdirectory for the program to reside, and un-ZIP all of
the files contained within INTSIG10.ZIP there. Since there are a
lot of small data files, it is recommended that this program be setup
and run on a floppy disk. The small files, only totalling around
35.5k will only eat up nearly 85k of floppy disk space, whereas four
times this amount (323k) would be required on a standard hard disk.

Lastly, in order to run SWBC Interval Signals for the first time,
it is essential that the user convert the interim data files based
upon the PC's clock rate, using the SIGFIX utility. This is required
because the software provided uses a special algorythm previously de-
veloped in the Polyphonic Music Player v1.2 (written by Mike Talvola,
Agora Hills, CA) to send three-tone polyphonic music to the PC's
speaker. The SIGFIX utility adjusts the data files in pitch and tempo
to accomodate the differing speeds of the PC, XT, and AT-2/3/486 class
machines. SIGFIX is run as follows:

SIGFIX clock(MHZ)

i.e. for the standard 8MHZ PC/AT:

SIGFIX 8

SIGFIX will then read all of the *.SI1 data files, one by one, conver-
ting each while displaying the stations represented. To avoid confu-
sion, the new files are given the extension *.SIG. The allowable
range of clock speeds to use are between 4.77 (standard PC, PC/XT) and
35.8 (better than a 33MHz '386).

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RUNNING. All that is required to run SWBC Interval Signals is to
type 'IS' at the DOS prompt. The program will read the titles of all
of the converted data files, and display them in a menu-like fashion.
Simply use the cursor keys to move the selection bar to the desired
interval signal to play, and hit ENTER to play it.

Do not be surprised if at first the pitch and tempo do not appear
to be correct. This is to be expected if using higher class 386 and
486 machines. If desired, the SIGFIX utility may be run again to fine
tune the sound, since PCs never run exactly at their specified clock
rates. If the selections sound too high and too fast, add one or two
MHz to the value used the first time SIGFIX was run, and run it again.
As well, if the the selections sound too low and too slow, subtract
one or two MHZ.

Once the proper pitch and tone is created, the *.SI1 files (not
the newly created *.SIG files), may be deleted. It is recommended,
however, that the *.SI1 files be kept somewhere for safe keeping, in
case you wish to install the program on another machine.

DISCLAIMER. This and all of the other files contained in the
file INTSIG10.ZIP are provided as public domain software to be used
and disseminated free of charge to the public. The author requests
that no fee be charged for the enjoyment or use of this software, or
subsequent versions will contain numerous annoying pleas for cash.
Neither the author nor his associates are responsible for any results
of using this software or hardware modification recommendations in-
cluded in this document on any computer system, whether used or per-
formed either properly or improperly. The user hereby agrees that he
is using this software/modifying his hardware at his own risk.

This and all of the other files contained in the file INTSIG10.ZIP are
provided as is, with no warranties, express or implied, including but
not limited to the implied warranties of fitness for a particular pur-
pose, and all such warranties are expressly and specifically dis-
claimed. In no event should the author or any of his associates be
responsible for any indirect, special, incidental or consequential
damages or lost profits to you or any other person or entity regard-
less of the legal theory, even if the author or any of his associates
have been advised of the possibility of such damage.

No person or entity is authorized to expand or alter either these war-
ranties or this agreement; any such representation will not bind the
author or his associates.

SUPPORT. The author would appreciate any comments regarding the
improvement of this software or any bug reports (nobody's perfect).
The author may be contacted on the following bulletin board systems
that he regularly calls:

The Cat's Meow BBS, Midland, Virginia 1-703-439-3060
Pinelands BBS, Vincentown, New Jersey 1-609-859-1910
(Name used on BBSs: 'MARK FINE')




SWBC Interval Signals v1.0 Page 2 of 3








He may also be contacted via any bulletin board system currently par-
ticipating in the following national BBS conference echos:

FidoNet SWL echo
RIME HAM and SCANNERS echoes (route using '->MEOW')

The author may also be contacted by mail at his home address (phone
calls are discouraged):

MARK J. FINE
c/o FineWare, Inc.
11252 Cardinal Drive
Remington, Virginia 22734-9684

Comments should be constructive and should contain detailed descrip-
tions of what the user would like to see included in this software.
If a bug report is in order, please include information such as com-
puter make and model, version and make of DOS used, a hard copy of the
user's AUTOEXEC.BAT and CONFIG.SYS files, as well as detailed descrip-
tions of the nature of each problem. All constructive comments and
bug reports will result in a prompt, courteous response.

























CREDITS:

* the World Radio TV Handbook is published by Billboard Ltd., London,
UK; under license from Billboard AG, Amsterdam, The Netherlands.
Andrew G. Sennitt, Editor.

* the Polyphonic Music Player v1.2 was written by Mike Talvola, Agora
Hills, CA; and was distributed in the public domain as of 20 July
1986. Credit was given to Steve Muenter for "Polyphonic Music on
the IBM PC".

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