General Information
BULG-ASCII is a modem used by the Bulgarian Ministry of Foreign Affairs.
Usage:
§ Transfer of textual information over HF.
Mode Details
|
|
Item |
Value |
|
Standard |
Modulation |
FSK |
|
|
Number of tones |
2 |
|
|
Shift (Hz) |
500 |
|
|
Bandwidth (Hz) |
600 |
|
|
Symbol rate (Bd) |
120 |
|
Demodulator Settings |
Demodulator |
FSK 2 matched |
|
|
Symbol rate (Bd) |
75 |
|
|
SR tolerance (Bd) |
10 |
|
|
Shift (Hz) |
510 |
|
|
Shift tolerance (Hz) |
10 |
|
|
Modem type |
Synchronous |
|
Features |
Demodulation |
yes |
|
|
Recognition |
yes |
|
|
Decoding |
yes |
|
|
Automatic Polarity Adjustment |
yes |
|
|
Combination with other modems (modem list) |
yes |
|
Tuning |
The tuning frequency is the center of the signal | |
Table 52: BULG-ASCII
Figure 19: BULG-ASCII Spectrogram