WSJT-X/lib/wsjt_modes.txt

69 lines
3.4 KiB
Plaintext
Raw Normal View History

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