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69 lines
3.3 KiB
Plaintext
69 lines
3.3 KiB
Plaintext
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WSJT modes: Modulation Parameters
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---------------------------------
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------------------------------------------------------------------------
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Mode nsps Rate B t_sym t_msg Suggested
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(baud) (Hz) (ms) (s) applications
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------------------------------------------------------------------------
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Fast modes, sample Rate 11025 Hz:
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------------------------------------------------------------------------
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JTMS 8 689 1378 0.7 0.097 MS on 144+
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FSK441 25 441 1764 2.3 0.129 MS
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ISCAT-A 512 21.5 905 46.4 1.11 Aircraft Scatter
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ISCAT-B 256 43.1 1809 23.2 0.56 Ionoscatter (6m)
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JT6M 512 21.5 947 46.4 1.32 Ionoscatter (6m)
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Slow modes, sample Rate 11025 Hz:
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------------------------------------------------------------------------
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JT65A 4096 2.69 178 372 46.81 EME 50 MHz
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JT65B 4096 2.69 355 372 46.81 EME 144, 432
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JT65C 4096 2.69 711 372 46.81 EME 1296-and-up
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JT4A 2520 4.375 17.5 229 47.09 QRP HF dxing
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JT4B 2520 4.375 35 229 47.09
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JT4C 2520 4.375 70 229 47.09
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JT4D 2520 4.375 158 229 47.09
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JT4E 2520 4.375 315 229 47.09
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JT4F 2520 4.375 630 229 47.09 Microwave EME
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JT4G 2520 4.375 1260 229 47.09 Microwave EME
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------------------------------------------------------------------------
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Mode nsps Rate B t_sym t_msg Suggested
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(baud) (Hz) (ms) (s) applications
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------------------------------------------------------------------------
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Slow modes, sample Rate 12000 Hz:
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------------------------------------------------------------------------
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JT9A 6912 1.736 15.625 576 48.96 QRP HF dxing
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JT9B 3840 1.736 28.125 576 48.96
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JT9C 1920 1.736 56.25 576 48.96
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JT9D 960 1.736 112.5 576 48.96
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JT9E 480 1.736 225 576 48.96
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JT9F 240 1.736 450 576 48.96
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JT9G 120 1.736 900 576 48.96
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JT9H 60 1.736 1800 576 48.96 Microwave EME?
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WSPR 8192 1.465 5.86 683 110.59 Propagation probe
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------------------------------------------------------------------------
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Fast modes, sample Rate 12000 Hz:
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------------------------------------------------------------------------
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JT9B 3840 3.125 28.125 320 27.20 Not yet...
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JT9C 1920 6.25 56.25 160 13.60 Not yet...
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JT9D 960 12.5 112.5 80 6.80 Ionoscatter
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JT9E 480 25 225 40 3.40 Ionoscatter
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JT9F 240 50 450 20 1.70 Ionoscatter
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JT9G 120 100 900 10 0.85 Ionoscatter
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JT9H 60 200 1800 5 0.43 Ionoscat (no 10m)
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JTMSK 6 2000 2000 0.5 0.117 MS
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------------------------------------------------------------------------
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nsps - Samples per symbol, at stated sample rate
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Rate - Keying rate (baud)
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B - Bandwidth (Hz)
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t_sym - Symbol duration (ms)
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t_msg - Time (s) to transmit typical 18-character message
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