Coherent CW

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Coherent CWContinuous Wave | Coherent BPSK
Coherent CWContinuous Wave
Coherent CW.jpg
Frequencies 3 MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
,30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
30,000 kHzKiloHertz (kHz) 10^3 Hz
3,000 kHzKiloHertz (kHz) 10^3 Hz
MHzMegaHertz (MHz) 10^6 Hz
30,000 kHzKiloHertz (kHz) 10^3 Hz
30 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
- 30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
30,000 kHzKiloHertz (kHz) 10^3 Hz
Mode USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)
Modulation OOKOn-Off Keying Modulation
ACFAutoCorrelation Function
Bandwidth 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).1.0e-3 kHzKiloHertz (kHz) 10^3 Hz
1.0e-6 MHzMegaHertz (MHz) 10^6 Hz
1.0e-3 kHzKiloHertz (kHz) 10^3 Hz
1.0e-6 MHzMegaHertz (MHz) 10^6 Hz
1.0e-3 kHzKiloHertz (kHz) 10^3 Hz
1.0e-6 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description Coherent CWContinuous Wave (also known as CCW) was a strictly timed morse code mode designed by Ray Petit W7GHM (The same inventor of CLOVER). CCW depended on accurate timing from both receiver and transmitter.
I/Q Raw Recording
Audio Sample
Coherent CWContinuous Wave (also known as CCW) was a strictly timed morse code mode designed by Ray Petit W7GHM (The same inventor of CLOVER). CCW depended on accurate timing from both receiver and transmitter.


Characteristics[edit]

CCW ran at exactly 12 words per minute, with 100ms for dot length and element space and 300ms for dash length and character space. CCW, using a synchronous clock rate, allows for users to take advantage of extremely narrowband filtering what increases the SNR and allows for reception in poor propagation conditions at the expense of very slow transmission. It is technically very simple (OOKOn-Off Keying Modulation) and is easily implemented.

Samples[edit]

Frequencies[edit]

Used on Amateur Radio HFHigh Frequency (3-30 MHz) bands.

Decoding Software[edit]

Hobby Level Software
*Both COHERENT and AFRICA are 16-bit DOS applications*

Video Examples[edit]

Additional Links[edit]


Additional Images[edit]