Datawell Buoy HF Link

From Signal Identification Wiki
Jump to: navigation, search
Datawell Buoy HFHigh Frequency (3-30 MHz) Link
Datawell 2FSK.jpg
Frequencies 25.5 MHzMegaHertz (MHz) 10^6 Hz25,500,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
25,500 kHzKiloHertz (kHz) 10^3 Hz
,35.5 MHzMegaHertz (MHz) 10^6 Hz35,500,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
35,500 kHzKiloHertz (kHz) 10^3 Hz
,45 MHzMegaHertz (MHz) 10^6 Hz45,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
45,000 kHzKiloHertz (kHz) 10^3 Hz
25,500 kHzKiloHertz (kHz) 10^3 Hz
25.5 MHzMegaHertz (MHz) 10^6 Hz
45,000 kHzKiloHertz (kHz) 10^3 Hz
45 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 25.5 MHzMegaHertz (MHz) 10^6 Hz25,500,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
25,500 kHzKiloHertz (kHz) 10^3 Hz
- 45 MHzMegaHertz (MHz) 10^6 Hz45,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
45,000 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 FSKFrequency-Shift Keying,MFSKMultiple Frequency Shift-Keying
ACF
Bandwidth 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.2 kHzKiloHertz (kHz) 10^3 Hz
2.0e-4 MHzMegaHertz (MHz) 10^6 Hz
,400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.4 kHzKiloHertz (kHz) 10^3 Hz
4.0e-4 MHzMegaHertz (MHz) 10^6 Hz
0.2 kHzKiloHertz (kHz) 10^3 Hz
2.0e-4 MHzMegaHertz (MHz) 10^6 Hz
0.4 kHzKiloHertz (kHz) 10^3 Hz
4.0e-4 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description Datawell Buoy HFHigh Frequency (3-30 MHz) Links transmitted by Datawell Marine measurement buoys, measuring ocean conditions, temperature, and wave current.
I/Q Raw Recording
Audio Sample
Datawell Buoy HFHigh Frequency (3-30 MHz) Links transmitted by Datawell Marine measurement buoys, measuring ocean conditions, temperature, and wave current. Developed by Datawell BV in the Netherlands. The buoys get 50 km transmission range with the HFHigh Frequency (3-30 MHz) link. There are two transmission modes used by the buoys, 2FSK and 4MFSK. HXV firmware uses 2FSK, where HVA firmware uses 4MFSK.

2FSK uses 65 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). shift at 40 bdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. 4MFSK uses 4 frequencies at ~85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). shift between frequencies at 40 bdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.


Samples[edit]

HXV 2FSK HVA 4MFSK
Datawell 2FSK.jpg
Datawell 4mfsk.png

Possible Erroneous Transmissions[edit]

It is possible to find an improperly configured buoy transmitting the wrong transmission type.

HVA with 2FSK
Transmitter
HXV with 4MFSK
Transmitter
Wrong 4mfsk.jpg
Wrong 2fsk.png

Frequencies[edit]

Primary HFHigh Frequency (3-30 MHz) link frequencies are 25.5 MHzMegaHertz (MHz) 10^6 Hz - 35.5 MHzMegaHertz (MHz) 10^6 Hz, but 35.5 MHzMegaHertz (MHz) 10^6 Hz - 45 MHzMegaHertz (MHz) 10^6 Hz is available upon request.


Decoding Software[edit]

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]