mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-10-30 20:40:28 -04:00
5f2ba00bb8
Version information and more in the Windows resources for main
applications, installer and un-installer.
Update CMake policies for new project() command, and DEB
dependency changes
Support older libgfortran packages, and other Linux package
dependencies.
Use new project description file in Debian packaging.
Linux packaging dependency adjustments for Debian style packages,
including a machine readable Debian copyright format, project
description in separate file for CPack compatibility, and use for
DEB packaging.
Configure check for need to link libm Standard C Math Library.
CMake compatibility for <3.17.
180 lines
6.0 KiB
Plaintext
180 lines
6.0 KiB
Plaintext
:doctype: manpage
|
|
:man source: AsciiDoc
|
|
:man version: {VERSION}
|
|
:man manual: WSJT-X Manual
|
|
= jt65code(1)
|
|
|
|
== NAME
|
|
|
|
jt65code, jt9code, jt4code, qra64code, ft8code, msk144code - Weak signal communications encoding support utilities.
|
|
|
|
== SYNOPSIS
|
|
|
|
*jt65code* "'MESSAGE'"
|
|
|
|
*jt65code* ['OPTIONS']
|
|
|
|
*jt9code* "'MESSAGE'"
|
|
|
|
*jt9code* ['OPTIONS']
|
|
|
|
*jt4code* "'MESSAGE'"
|
|
|
|
*jt4code* ['OPTIONS']
|
|
|
|
*qra64code* "'MESSAGE'"
|
|
|
|
*qra64code* ['OPTIONS']
|
|
|
|
*ft8code* "'MESSAGE'"
|
|
|
|
*ft8code* ['OPTIONS']
|
|
|
|
== OPTIONS
|
|
*-t*::
|
|
|
|
Prints a selection of messages alongside their corresponding decoded
|
|
form and types. With *ft8code* prints a selection of short format
|
|
messages
|
|
|
|
*-T*::
|
|
|
|
As *-T* but for *ft8code* prints long format messages.
|
|
|
|
== DESCRIPTION
|
|
|
|
*jt65code*, *jt9code*, *jt4code*, and *ft8code* are utility programs
|
|
that let you explore the conversion of user-level messages into
|
|
channel symbols or “tone numbers.” These programs can be useful to
|
|
someone designing a beacon generator for JT9 or JT65, or for studying
|
|
behavior of the error-control codes for each of the protocols.
|
|
|
|
Channel-symbol values for JT9 run from 0 to 8, with 0 representing the
|
|
sync tone. The total number of symbols in a transmitted message is
|
|
85. To run jt9code, enter the program name followed by a JT9 message
|
|
enclosed in quotes. In Windows the command and program output might
|
|
look like this:
|
|
|
|
.....
|
|
$ jt9code "G0XYZ K1ABC FN42"
|
|
Message: G0XYZ K1ABC FN42
|
|
Channel symbols:
|
|
0 0 7 3 0 3 2 5 4 0 1 7 7 7 8 0 4 8 8 2 2 1 0 1 1 3 5 4 5 6
|
|
8 7 0 6 0 1 8 3 3 7 8 1 1 2 4 5 8 1 5 2 0 0 8 6 0 5 8 5 1 0
|
|
5 8 7 7 2 0 4 6 6 6 7 6 0 1 8 8 5 7 2 5 1 5 0 4 0
|
|
Decoded message: G0XYZ K1ABC FN42
|
|
.....
|
|
|
|
For the corresponding program jt65code only the information-carrying
|
|
channel symbols are shown, and the symbol values range from 0 to
|
|
63. Sync synbols lie two tone intervals below data tone 0, and the
|
|
sequential locations of sync symbols are described in the JT65
|
|
Protocol section of this Guide.
|
|
|
|
A typical execution of jt65code is shown below. The program displays
|
|
the packed message of 72 bits, shown here as 12 six-bit symbol values,
|
|
followed by the channel symbols:
|
|
|
|
.....
|
|
$ jt65code "G0XYZ K1ABC FN42"
|
|
Message: G0XYZ K1ABC FN42
|
|
Packed message, 6-bit symbols: 61 36 45 30 3 55 3 2 14 5 33 40
|
|
Information-carrying channel symbols:
|
|
56 40 8 40 51 47 50 34 44 53 22 53 28 31 13 60 46 2 14 58 43
|
|
41 58 35 8 35 3 24 1 21 41 43 0 25 54 9 41 54 7 25 21 9
|
|
62 59 7 43 31 21 57 13 59 41 17 49 19 54 21 39 33 42 18 2 60
|
|
Decoded message: G0XYZ K1ABC FN42
|
|
.....
|
|
|
|
For an illustration of the power of the strong error-control coding in
|
|
JT9, JT65 and JT4, try looking at the channel symbols after changing a
|
|
single character in the message. For example, change the grid locater
|
|
from FN42 to FN43 in the JT65 message:
|
|
|
|
.....
|
|
$ jt65code "G0XYZ K1ABC FN43"
|
|
Message: G0XYZ K1ABC FN43
|
|
Packed message, 6-bit symbols: 61 36 45 30 3 55 3 2 14 5 33 41
|
|
Information-carrying channel symbols:
|
|
25 35 47 8 13 9 61 40 44 9 51 6 8 40 38 34 8 2 21 23 30
|
|
51 32 56 39 35 3 50 48 30 8 5 40 18 54 9 24 30 26 61 23 11
|
|
3 59 7 7 39 1 25 24 4 50 17 49 52 19 34 7 4 34 61 2 61
|
|
Decoded message: G0XYZ K1ABC FN43
|
|
.....
|
|
|
|
You will discover that every possible JT65 message differs from every
|
|
other possible JT65 message in at least 52 of the 63
|
|
information-carrying channel symbols.
|
|
|
|
.....
|
|
$ qra64code "G0XYZ K1ABC FN43"
|
|
Message Decoded Err? Type
|
|
--------------------------------------------------------------------------
|
|
1 G0XYZ K1ABC FN43 G0XYZ K1ABC FN43 1: Std Msg
|
|
|
|
Packed message, 6-bit symbols 61 36 45 30 3 55 3 2 14 5 33 41
|
|
|
|
Information-carrying channel symbols
|
|
61 36 45 30 3 55 3 2 14 5 33 41 14 28 2 7 58 45 9 43 20 48 29 55 43 24 3 13 18 21
|
|
40 3 17 28 59 62 2 50 26 24 2 1 2 61 10 9 16 40 1 18 28 30 33 39 60 45 16 21 60 11
|
|
9 40 14
|
|
|
|
Channel symbols including sync
|
|
20 50 60 0 40 10 30 61 36 45 30 3 55 3 2 14 5 33 41 14 28 2 7 58 45 9 43 20 48 29
|
|
55 43 24 3 13 18 21 40 3 20 50 60 0 40 10 30 17 28 59 62 2 50 26 24 2 1 2 61 10 9
|
|
16 40 1 18 28 30 33 39 60 45 16 21 60 11 9 40 14 20 50 60 0 40 10 30
|
|
.....
|
|
|
|
.....
|
|
$ msk144code "G0XYZ K1ABC FN43"
|
|
Message Decoded Err i3.n3
|
|
----------------------------------------------------------------------------------------------------
|
|
1. G0XYZ K1ABC FN43 G0XYZ K1ABC FN43 1. Standard msg
|
|
|
|
Channel symbols
|
|
110000110100110001010010011100110010010110000011011001001100001101111010
|
|
110010110111111100001101001111000111101011111011100001110000011101110110
|
|
.....
|
|
|
|
.....
|
|
$ ft8code "G0XYZ K1ABC FN43"
|
|
Message Decoded Err i3.n3
|
|
----------------------------------------------------------------------------------------------------
|
|
1. G0XYZ K1ABC FN43 G0XYZ K1ABC FN43 1. Standard msg
|
|
|
|
Source-encoded message, 77 bits:
|
|
00001000111111010001110111010000010011011110111100011010100010100001100111001
|
|
|
|
14-bit CRC:
|
|
00110001001011
|
|
|
|
83 Parity bits:
|
|
10000110000001010101100000100110100110100000111000101110000110001001110000000110011
|
|
|
|
Channel symbols (79 tones):
|
|
Sync Data Sync Data Sync
|
|
3140652 03174526450547670460602143205 3140652 64040136505454507064041140042 3140652
|
|
.....
|
|
|
|
|
|
WSJT-X home page:: https://www.physics.princeton.edu/pulsar/K1JT/wsjtx.html
|
|
|
|
WSJT-X User's Guide::
|
|
https://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-{VERSION}.html
|
|
|
|
== AUTHOR
|
|
|
|
Joe Taylor, K1JT.
|
|
|
|
== COPYING
|
|
|
|
*jt65code*, *jt9code*, *jt4code*, and *ft8code* are Copyright (C) 2001
|
|
- 2020 by Joseph H. Taylor, Jr., K1JT, with contributions from
|
|
additional authors. WSJT-X is Open Source software, licensed under
|
|
the GNU General Public License (GPLv3).
|
|
|
|
These programs are distributed in the hope that they will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|