General Information
PSK31 is a modem type developed by radio amateurs. PSK31 emissions are very narrow-band and robust against fading effects.
Usage:
§ Transfer of textual information over HF.
Mode Details
|
|
Item |
Value |
|
Standard |
Modulation |
DBPSK,QPSK |
|
|
Bandwidth (Hz) |
50 |
|
|
Symbol rate (Bd) |
31.25 (62.5 / 125) |
|
|
Coding (FEC variants) |
Convolutional FEC |
|
Demodulator Settings |
Demodulator |
DPSK 2,4,8,16 A/B |
|
|
Symbol rate (Bd) |
31 |
|
|
SR tolerance (Bd) |
5 |
|
|
Modulation order |
2 |
|
|
Version |
A |
|
Features |
Demodulation |
yes |
|
|
Recognition |
yes |
|
|
Decoding |
yes |
|
|
Automatic Polarity Adjustment |
no |
|
|
Combination with other modems (modem list) |
yes |
|
Tuning |
The tuning frequency is the center of the signal | |
Table 183: PSK31
Figure 63: PSK31 Spectrogram