Chip64

Chip64 is digital HAM radio transmission mode developed by me (Nino Porcino, IZ8BLY) and Murray Greenman, ZL1BPU in 2004.

It uses a direct-sequence-spread-spectrum modulation technology (DSSS) restricted to the narrow bandwidth of HAM radio channels.

Published here on GitHub is the software I used to develop the mode and that later was distribuited to the radio amateurs community to be used in real QSOs. Included is the verbatim copy of the first contact done on the 20m band and logged by the program.

I publish the source code here on GitHub to prevent it from disappearing into oblivion (the code itself survived a severe disk crash occurred in 2008).

The software was written in C++ using the Borland C++ Builder (v6) and may be used under the terms of the GNU Public License.

It contains code (the Viterbi decoder) from Phil Karn KA9Q which is also GNU public licensed.

The executable can be downloaded from the Chip64 web page.

If you have any questions you can write me at: iz8bly (at) yahoo.it.

Enjoy,

-Nino

Name		Name	Last commit message	Last commit date
Latest commit History 1 Commits
Filters		Filters
Help		Help
Palettes		Palettes
.gitattributes		.gitattributes
.gitignore		.gitignore
About.cpp		About.cpp
About.ddp		About.ddp
About.dfm		About.dfm
About.h		About.h
ComplexFIR.cpp		ComplexFIR.cpp
ComplexFIR.h		ComplexFIR.h
Correlator128_IntegerMath.cpp		Correlator128_IntegerMath.cpp
Correlator16_IntegerMath.cpp		Correlator16_IntegerMath.cpp
Correlator256_IntegerMath.cpp		Correlator256_IntegerMath.cpp
Correlator32_IntegerMath.cpp		Correlator32_IntegerMath.cpp
Correlator64_1_IntegerMath.cpp		Correlator64_1_IntegerMath.cpp
Correlator64_IntegerMath.cpp		Correlator64_IntegerMath.cpp
DSSMath.cpp		DSSMath.cpp
DSSS.bpr		DSSS.bpr
DSSS.cpp		DSSS.cpp
DSSS.dsk		DSSS.dsk
DSSS.res		DSSS.res
Debug.cpp		Debug.cpp
Debug.h		Debug.h
DebugWindow.cpp		DebugWindow.cpp
DebugWindow.ddp		DebugWindow.ddp
DebugWindow.dfm		DebugWindow.dfm
DebugWindow.h		DebugWindow.h
DefineButton.cpp		DefineButton.cpp
DefineButton.ddp		DefineButton.ddp
DefineButton.dfm		DefineButton.dfm
DefineButton.h		DefineButton.h
DelayLine.cpp		DelayLine.cpp
DelayLine.h		DelayLine.h
FEC.cpp		FEC.cpp
FEC.h		FEC.h
IZ8BLY Chip64.exe		IZ8BLY Chip64.exe
Log.cpp		Log.cpp
Log.ddp		Log.ddp
Log.dfm		Log.dfm
Log.h		Log.h
LogBook2.ico		LogBook2.ico
Logger32.cpp		Logger32.cpp
Logger32.h		Logger32.h
MANIFEST.RES		MANIFEST.RES
Options.cpp		Options.cpp
Options.h		Options.h
PLL.cpp		PLL.cpp
PLL.h		PLL.h
PTT.cpp		PTT.cpp
PTT.h		PTT.h
Palette.cpp		Palette.cpp
Palette.h		Palette.h
Preferences.cpp		Preferences.cpp
Preferences.ddp		Preferences.ddp
Preferences.dfm		Preferences.dfm
Preferences.h		Preferences.h
Project1.cpp		Project1.cpp
Project1.dsk		Project1.dsk
ProjectGroup1.dsk		ProjectGroup1.dsk
README.md		README.md
Receiver.cpp		Receiver.cpp
Receiver.h		Receiver.h
ResourceFile.res		ResourceFile.res
SoundCard.cpp		SoundCard.cpp
SoundCard.h		SoundCard.h
Transmitter.cpp		Transmitter.cpp
Transmitter.h		Transmitter.h
Unit1.cpp		Unit1.cpp
Unit1.ddp		Unit1.ddp
Unit1.dfm		Unit1.dfm
Unit1.h		Unit1.h
VITERBI.cpp		VITERBI.cpp
VITERBI.h		VITERBI.h
Varicode.cpp		Varicode.cpp
Varicode.h		Varicode.h
_iz8bly.ini		_iz8bly.ini
chip64_first_qso.txt		chip64_first_qso.txt
fft.cpp		fft.cpp
icon_spread.bmp		icon_spread.bmp
icon_spread.ico		icon_spread.ico
icon_spread_16.bmp		icon_spread_16.bmp
image_audioinput.bmp		image_audioinput.bmp
image_audiooutput.bmp		image_audiooutput.bmp
image_cls.bmp		image_cls.bmp
image_rx.bmp		image_rx.bmp
image_tool.bmp		image_tool.bmp
iz8bly.ini		iz8bly.ini
logo_chip64.bmp		logo_chip64.bmp
menu_clear2.ico		menu_clear2.ico
menu_helpfile2.ico		menu_helpfile2.ico
menu_loadfont2.ico		menu_loadfont2.ico
menu_log.ico		menu_log.ico
menu_preferences2.ico		menu_preferences2.ico

nippur72/Chip64

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