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Ham Radio 2000 #2
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Ham Radio 2000 - Volume 2.iso
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HAMV2
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RIGCTRL
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CATSCAN
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CATSCAN.TXT
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1997-09-12
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6KB
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171 lines
Cat Scan Version 3.0
Computer control for the Yaesu FT890 transceiver
Copyright (C)1995-7, Brian E. Cauchi, 9H1JS. All rights reserved.
CONTENTS
1. Introduction
2. Station database
3. Advanced scanning facilities
4. Short-cuts
5. Command line interface
6. CAT interface schematic
7. Conditions for use
8. Contact information
1. INTRODUCTION
CatScan provides computer control for the Yaesu FT890 (and similar)
transceivers. It complements the facilities found on the radio, and adapts the
radio better to a radio facsimile monitoring environment.
It provides a simple way to use a Station database, and to browse the bands
selectively.
It has Advanced scanning facilities, to help you find the best signal on the
bands.
It has Short-cuts to otherwise awkward functions, such as Direct frequency
key-in, Write memories to radio and Side-band/filter toggle.
It has a Command line interface so that scripts can be used to control the
radio from within other programs.
2. STATION DATABASE
The station database is a text file, containing a list of records. Each
record consists of fixed length fields. Only the Frequency, Callsign and Flags
fields are of significance to CatScan. Additional fields (UTC, Service,
LPM/IOC) are provided for descriptive purposes.
The Frequency field contains the carrier frequency in kHz. The Callsign
field, containing the callsign, is used to select records when the Call-query
filter is set.
The Flags field contains one or more characters indicating the type(s) of
service. It is used to select records when the Flags-query filter is set.
Specific flags are of special significance to CatScan.
The F flag denotes that the service is Facsimile, and the appropriate 1.9kHz
offset is applied to the operating frequency when in single side-band mode.
The * flag denotes that the record is Marked. Unlike other flags, which are
fixed, it may be set manually by pressing *. It is also set automatically by
the Scan and Mark function.
3. ADVANCED SCANNING FACILITIES
For best results, it is recommended that AGC is set to Fast, and the RF gain
control is set fully clockwise, when scanning facilites are utilised.
Memory Scan
1. Scans active database records.
2. Scanning stops when the S-reading reaches the set S-level.
3. May be used to log signal activity continuously to the file 'catscan.log'.
Limit Scanning
1. Scans a band of frequencies continuously. Scanning stops when the S-reading
reaches the set S-level, and commences after 5 seconds without signal.
2. Ideal for scanning AM broadcast bands and CB channels.
3. Channels may be browsed manually by using the Left/right arrow keys.
Sweep Scan
1. Scans the band 0.1-30MHz and logs signal readings at 100kHz intervals, to
the file æsweep.logÆ.
Get Best Signal
1. Scans all active database records
2. Updates the memory channels of the radio.
3. Optionally marks records whose S-reading reaches the set S-level.
4. Selects strongest signal
4. SHORT-CUTS
Direct frequency key-in
Simply type in the frequency on your computer keyboard, and press Enter. Any
numeric key press triggers this function automatically.
Write memories to radio
Active database records (up to a maximum of 32) are written to each memory
channel. Both the front and rear location of each memory are updated, however,
the rear memory is loaded with an alternate mode that would be most
appropriate. Unused memories are cleared.
Toggle side-band/filter
This function toggles LSB/USB, CW/CW-Narrow and AM/AM-Narrow. If in LSB/USB
mode, the appropriate 1.9kHz offset is applied to the operating frequency if
the F flag is set.
5. COMMAND LINE INTERFACE
CatScan S[weep]
This is the command line equivalent of the Sweep Scan function.
CatScan <Callsign> <Mode> [Flags]
This is the command line equivalent of the Get Best Signal function. It allows
the user to apply a query on callsign and flags, and to set the operating mode.
The default log file is updated.
CatScan <Freq kHz> <Mode> [Fax]
This allows the user to set the frequency and operating mode directly. The
default log file is updated.
Remarks
An asterisk in <Callsign> matches all callsigns.
<Mode> is one of LSB, USB, CW, AM, FM
An asterisk in [Flags] selects records marked in a previous session.
The [Fax] flag applies the appropriate single side-band shift (±1.9kHz)
6. CAT INTERFACE SCHEMATIC
<catscan.tif>
This circuit uses a few, readily available, low cost parts. It is phantom
powered, drawing current from the computerÆs RS-232 port.
Pin numbers shown apply to the Yaesu FT890, and may be different for other
models.
It is strongly recommended to use screened cables.
7. CONDITIONS FOR USE
This program is licensed for noncommercial use only. It may be copied
and used by anyone as long as it is distributed in whole and without profit.
The collection of files on the distribution disk must be distributed in an
unmodified form. Unlicensed commercial distribution is prohibited.
The author provides absolutely no warranty. The program is supplied "as
is", and you may use it at your own risk. In no event will the author be liable
for any damages arising out of the use of this program.
Bug reports, suggestions and feedback are welcome. For contact
information, see below.
8. CONTACT INFORMATION
Postal address: Brian E. Cauchi,
Gawhra, Domenico Cachia Street,
Birkirkara BKR06, MALTA.
Email address: briane@geocities.com
Web page: http://www.geocities.com/SiliconValley/2504
Cat Scan for the Yaesu FT890 - User's manual - End of file