MT63

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MT63
MT63.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 OFDMOrthogonal Frequency-Division Multiplexing,PSKPhase-Shift Keying
ACFAutoCorrelation Function
Bandwidth 500Hz0.5 kHzKiloHertz (kHz) 10^3 Hz
5.0e-4 MHzMegaHertz (MHz) 10^6 Hz
,1000HzkHzKiloHertz (kHz) 10^3 Hz
1.0e-3 MHzMegaHertz (MHz) 10^6 Hz
,2000HzkHzKiloHertz (kHz) 10^3 Hz
0.002 MHzMegaHertz (MHz) 10^6 Hz
0.5 kHzKiloHertz (kHz) 10^3 Hz
5.0e-4 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.002 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description MT63 is a Orthogonal Frequency Division Multiplexed (OFDMOrthogonal Frequency-Division Multiplexing) digital data mode aimed for use in high noise environments.
I/Q Raw Recording
Audio Sample
MT63 is a Orthogonal Frequency Division Multiplexed (OFDMOrthogonal Frequency-Division Multiplexing) digital data mode aimed for use in high noise environments. MT63 was developed by Paweł Jałocha SP9VRC. MT63 is designed for keyboard-to-keyboard conversation modes on HFHigh Frequency (3-30 MHz) amateur radio bands.

MT63 distributes the encoding of each character over a long time period and over several tones. This code and symbol spreading implementation is key to its robustness under less than ideal conditions. The MT63 mode is very tolerant of mistuning, as most software will handle 120 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). tuning offsets under normal conditions.[1]

MT63 uses 64 BPSKBinary Phase-Shift Keying (1 bit per symbol) (2-PSKBinary Phase-Shift Keying (1 bit per symbol)) channels placed in 500, 1000, and 2000Hz of bandwidth.

There are 2 main modes of transmission: Short Interleaving and Long Interleaving. With Short Interleaving, MT63's robustness is somewhat compromised in exchange for lower latency (Time to end of transmission). With Long Interleaving, MT63 operates at it's best robustness in exchange for a longer latency (about double the latency of Short Interleaving).


MT63Table.png


Samples[edit]

Short Interleaving Long Interleaving
MT63-500S

500S.jpg
MT63-500L

500L.jpg
MT63-1000S

1000S.jpg
MT63-1000L

1000L.jpg
MT63-2000S

2000S.jpg
MT63-2000L

2000L.jpg

Decoding Software[edit]

Hobby Level Software

Additional Links[edit]

Additional Images[edit]