DominoEX

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Domino Series: DominoF -> DominoEX -> THOR 

DominoEX
DominoEX.png
Frequencies 10.142 MHz,5.332 MHz,28.117 MHz
Frequency Range 5.332 MHz - 28.117 MHz
Mode USB
Modulation IFK
ACF
Emission Designator
Bandwidth 173 Hz,244 Hz,346 Hz,262 Hz,355 Hz,524 Hz
Location Worldwide
Short Description DominoEX, also known as just Domino, is an IFK (Incremental Frequency Keying) mode developed by Murray Greenman ZL1BPU and Con Wassilieff ZL2AFP in 2004 that was the first fully developed iteration of the Domino IFK family modes. Used to send text over RF.
I/Q Raw Recording
Audio Sample

DominoEX, also known as just Domino, is an IFKIncremental Frequency Keying (Incremental Frequency Keying) mode developed by Murray Greenman ZL1BPU and Con Wassilieff ZL2AFP in 2004 that was the first fully developed iteration of the Domino IFKIncremental Frequency Keying family modes Used to send text over RFRadio Frequency. It is the successor to the developmental versions DominoF and DominoG.

IFKIncremental Frequency Keying (Incremental Frequency Keying) is used, where the data is represented not by the frequency of each tone, but by the frequency difference between one tone and the next. An additional technique, called Offset Incremental Keying (IFK+Offset Incremental Frequency Keying) is used to manage the tone sequence in order to counter inter-symbol interference caused by multipath reception. This gives the mode a great improvement in robustness.

DominoEX had optional FECForward Error Correction for all of its available submodes.


MODE BAUD BW TONES SPEED FECForward Error Correction TONE SPACING
DominoEX 4 3.90625 173 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 18 ~25 WPM ~12 WPM BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate ×2
DominoEX 5 5.3833 224 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 18 ~31 WPM ~16 WPM BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate ×2
DominoEX 8 7.8125 346 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 18 ~50 WPM ~25 WPM BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate ×2
* DominoEX 11 10.766 262 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 18 ~70 WPM ~35 WPM BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate ×1
DominoEX 16 15.625 355 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 18 ~100 WPM ~50 WPM BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate ×1
DominoEX 22 21.533 524 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 18 ~140 WPM ~70 WPM BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate ×1
Table of DominoEX modes. * Default mode (with FECForward Error Correction off)

Samples[edit]

All sound samples send the default test message "The quick brown fox jumps over the lazy dog".

DominoEX 4

DominoEX 5

DominoEX 8

DominoEX 11

DominoEX 11 w/with FECForward Error Correction

DominoEX 16

DominoEX 22

Decoding Software[edit]

Hobby Level Software

Frequencies[edit]

Amateur Radio Frequencies

Additional Links[edit]

Additional Images[edit]