Coquelet-8 – Wavecom W61PC V7.5.0 User Manual
Page 145
WAVECOM Decoder W61PC/LAN Manual V7.5
Transmission Modes
135
Parameter
Value
Frequency range
HF
Operation modes
Asynchronous simplex
Modulation
MFSK-13
Speed
50.0 or 75.0 ms
Receiver settings
DATA, CW, LSB or USB
Input format(s)
AF, IF
Additional Info
ITA-2
COQUELET-13 has a tone duration of 75 ms which is equivalent to a 50 Bd Baudot transmission, with 1.5
stop bits. Two code tables are defined for this mode, Code Table 0 and Code Table 1.
Tone Assignment of COQUELET-13:
Tone Number
Frequency Hz
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
First tone Group
1
812
1
1
1
2
842
1
1
3
872
1
4
902
1
5
932
1
1
6
962
1
1
7
992
1
8
1022
9
1052
Idle or start tone
Second Tone Group
10
1082
1
1
11
1112
1
12
1142
1
13
1172
COQUELET-8
COQUELET-8 is an MFSK (Multiple Frequency Shift Keying) system, and like the PICCOLO system trans-
lates an ITA-2 character into a sequence of two tones.