General Information
MFSK8 is a mode for digital data communication in the amateur radio domain.
Usage:
§ Transfer of textual information by radio amateurs over HF.
Mode Details
|
|
Item |
Value |
|
Standard |
Modulation |
FSK |
|
|
Number of tones |
32 |
|
|
Tone spacing (Hz) |
7.8125 |
|
|
Bandwidth (Hz) |
330 |
|
|
Symbol rate (Bd) |
7.8125 |
|
|
Error correction |
FEC |
|
Demodulator Settings |
Demodulator |
Multitone (MFSK) |
|
|
Tone duration (ms) |
128 |
|
|
TD tolerance (ms) |
0 |
|
|
No. of tones |
32 |
|
|
Tone position type |
Equidistant frequencies |
|
|
Tone distance (Hz) |
7.813 |
|
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 138: MFSK8
Figure 48: MFSK8 Spectrogram