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Hacker Chronicles 2
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1014.FREQS.DOC
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1989-08-17
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Introduction
The RAC Frequency Catalog program provides a convenient method
of cataloging, retrieving, and printing frequencies for the SWL or
scanner enthusiast. The program requires a IBM PC or compatible with
384K of memory and two floppy disks or a hard drive. (A hard drive is
preferred for speed and database capacity.) Hard copy of the data can
be obtained on any 80 column printer attached to LPT1 of the PC. The
program is designed for a color monitor, however, a monochrome
monitor will work fine too.
The data files maintained by the RAC Catalog are compatible with
Ashton-Tate's Dbase III+. This allows the user to access the RAC
database files with Dbase III+.
However, the index files used by the RAC Catalog are not compatible
with Dbase, so users must use caution when modifying the databases.
The report format is controlled by a Dbase compatible .FRM file.
This also allows the user to create customized reports by modifying
the report form with Dbase III+.
RAC Catalog will maintain any number of database files. This allows
users of floppy disk systems to break up their data records to files
sizes that are compatible with the limited storage of floppy disks.
Also, data can be organized in sub-groups such as by state, type of
users, source of the data, however the user would decide to organize
his data.
A note on Shareware - Shareware is a concept for reducing the cost of
software. It is NOT freeware! Use this program, give copies to your
friends, upload it to Bulletin Boards. If you find this program
useful, become a registered user by sending $25 to the address below.
In this way you support the cost of developing and maintaining the
software. All registered users will be sent up dates to the program
as they are issued.
RAC Publications
22320 SW 63rd. Avenue
Boca Raton, FL 33428
Files
The following files are included on the disk (or in the .ZIP file)
and are required for operation of the system:
FREQS.EXE Executable program file.
FREQ1.FRM Dbase III+ compatible report form.
FREQS.DBF A database of databases. Contains an entry
for each different database to be serviced by
RAC Catalog.
MAIN.DBF Sample database.
FREQS.DOC This file.
Start-up
If you are using a system with a hard drive, create a directory for the
frequency catalog program and copy all the files to that directory.
Start the program by typing FREQS.
For floppy disk systems, create a system disk by coping FREQS.EXE,
FREQ1.FRM, and FREQS.DBF to a formatted system (bootable) disk and
place it in drive a:. Copy MAIN.DBF to a formatted diskette and place
it in drive b:. Additional databases should be created in drive b: when
using floppy based systems.
When operating with floppy drives, always put the database diskettes in
drive b: and the program disk in drive a:. The diskette in drive b:
must have enough space to hold the database and its index files. A single
360 Kb floppy will hold approximately 1000 records. If you have more data
records than this, segment them into multiple files and store them on
different floppy diskettes.
Select the a: drive and run the program by typing FREQS. On start-up
the program looks for the database file FREQS.DBF from which you will
select the user database. If the program does not find FREQS.DBF it will
prompt the operator for the drive and path to the file. If not found it
that path, the program will abort.
The first time the program is started it has to build the index files
for the databases. This takes only a minute or so, depending on the
size of the datafiles. Again, the indexes will be built on the floppy
containing the database or in the directory containing the database if
used on a hard drive system.
NOTE: The database files are Dbase III+ compatible, the index files
are NOT! You may access the database files with Dbase III+
however if any of the Key Fields (User, Frequency, or Service Code)
are modified the RAC Catalog index files will be corrupted.
This causes no significant problem, just delete the index files
(.NTX extension) and restart the RAC Catalog Program, it
will rebuild the indexes. If you experience any unusual display
operation, the indexes should be deleted and re-built by restarting
the program.
Main Screen
On start-up the program will display the shareware notice and then go
to the database selection screen. The program can use any number of
databases in order to allow the user to segment his data anyway that
he desires. A sample database has been provided. You may create
your own by pressing <Esc> and following the prompts.
After database selection the program goes to the main display screen.
All functions are accessible from this screen. The main menu can be
accessed by pressing the "M" key. Selecting a menu function is as easy
as using the arrows to move the highlight to the desired operation,
and press the <Enter> key.
You may also press the first letter of the desired function from the
main display screen (except S - Select new database) without calling
up the main menu. For instance to change the display order press O,
the select menu for the display order will appear.
Cursor movement from field to field can be accomplished by using the
RightArrow and LeftArrow keys. Holding down the <Ctrl> key with the
Arrow keys will scroll the screen one entire window. Vertical scrolling
from record to record is accomplished with the DownArrow and UpArrow keys.
Paging of the data records vertically is done by pressing the Pg Up and
Pg Dn keys.
Unlike Dbase III+ browse, pressing a key will not modify data on this
main display screen. You may modify a field from the screen by moving the
highlight to the desired field and pressing the <Enter> key. You will note
that a cursor appears to indicate the edit mode. Make the desired changes
and press <Enter> again to complete the modification and save the changed
record.
Main Menu Functions
Pressing the "M" key will pop up the main menu. All functions of the
RAC Catalog program are accessible from the main menu. You may press the
first letter of the desired item, or move the highlight with the Uparrow and
Downarrow keys and press <Enter>. A short explanation of each function is
displayed across the bottom of the screen as the highlight is moved. As you
become familiar with the functions you may access them directly from the
display screen by pressing the first letter of the name of the function.
The functions are as follows:
Add Adds records to the currently selected and displayed database
file. The add record function will pop up a small window
that allows full screen editing of the record. Pressing the
<F3> key on a field entry will recall the data entered in
that field for the previous record.
Delete Deletes the currently highlighted record from the database. The
record is marked for deletion, and it database will be packed
when a new database is selected or the program is exited.
Edit Edit the currently selected record in a pop up window. This mode
is different from the single field edit mode on the main screen
in that you can see the entire record in the pop up window. You
may also edit a field within a record on the main screen by
pressing the <Enter> key on the field. You will see the
cursor appear to indicate the edit mode. Terminate the edit
by pressing <Enter> again.
Find Allows seeking a specific record in the database. Find is
dependant on the display mode. If the display order is set to
"User" order, a prompt will appear at the bottom of the screen
asking for the first 8 characters of the user. If the display
modes is set to "Frequency," the prompt will ask for the frequency.
If in the "Service Code" display mode, the prompt will ask for the
two character Service Code. In all cases, if the exact match is not
found, the program will position the highlight to the nearest record
past the desired match. Note that this is an ASCII search, and
that upper case characters will come before lower case.
Order Selects one of three display orders, by Frequency, by User
name (the first eight characters of the user name), or by
Service Code. In User and Service Code modes, the display is
secondarily ordered by frequency.
Print Selects print menu. Printer support is for a 80 character
width generic printer, no control codes are sent. You should
select the printer modes before starting the Frequency
program. Make sure you printer is on line, or the program
will exit.
Creating Database Files
As pointed out previously, the program can support any number of database
files allowing the user to segment a very large collection of frequency info
into files of manageable size or to allow them to be stored on floppy
diskettes.
To create a new database, from the main display screen (or from the database
selection window at start-up) press the "M" key to pop up the main menu, then
"S" to bring up the database selection window. To create the new database
file press the <Esc> key. You will be prompted for a seven character name
for the database file, and the notation for the selection display. After
entering this information you will be prompted for the drive and path on which
to create the new database file. This should be a valid DOS drive and path
specifier and should always end with the backslash character "\"
The program will create the database file, build the three index files
and go to the main display screen. Of course there will be no data
records to display. You may then begin entering the data.
From the database selection window you may also delete a database file.
This is the same as with deleting a record from the main screen, pressing the
"D" key on the highlighted record will allow deletion of the database from
the selection window. NOTE: This action does not delete the actual data
file, but rather the reference to it in the FREQS.DBF file.
If during the creation of a database you attempt to create a file that
already exists, the program will indicate that a file already exists and
ask if you wish to use it. This is useful if someone gives you a compatible
database and you would like to add it to your database selections. Answer
"Y" and the program will add the new database to the selection window and
build the indexes for the new file.