Coquelet-13; Coquelet-80 - Wavecom W40PC Manual

Parameter
Frequency range
System
Tone duration
Modulation
Receiver settings
Signal source(s)
Alphabet
Coquelet-8 is a MFSK (Multiple Frequency Shift Keying) system and like the PICCOLO
system translates an ITA-2 character into a sequence of two tones.
The first group of tones contains 8 tones (1 - 8) and the second group the tones 5 - 8. Tones 1 -
4 of the second group are not defined.
Coquelet-8 is a synchronous system with a tone duration of 75.0 ms, 50.0 ms or 37.5 ms. One
ITA-2 character is transmitted in 75 or 150 ms equivalent to 50 or 100 Baud Baudot with 1.5
stop bit (codeword length 7.5 Bit).
Tone Assignment of COQUELET-8:
Group I (1
1
773

COQUELET-13

Parameter
Frequency range
System
Tone duration
Modulation
Receiver settings
Signal source(s)
Alphabet
Coquelet-13 is an asynchronous system and uses a start and idle tone of 1052 Hz. As for
Coquelet-8 the first group contains 8 tones for keying and the second group 4 tones.
Coquelet-13 has a tone duration of 75 ms which is equivalent to a 50 Baud Baudot
transmission with 1.5 stop bit. Two code tables are defined for this mode, "Code Table 0" and
"Code Table 1".
Tone Assignment of COQUELET-13:
Group I (1
1
812

COQUELET-80

132 • Transmission Modes
st
Tone)
2 3 4 5
800 826 853 880
st
Tone)
2 3 4 5
842 872 902 932
Value
HF
MFSK, System synchronized
37.5, 50.0 or 75.0 ms
SSB or DIRECT-FSK
CW, LSB or USB
AF, HF or IF
ITA-2
Group II (2
6 7 8
907 933 960
Value
HF
MFSK, System out of sync
50.0 or 75.0 ms
SSB or DIRECT-FSK
CW, LSB or USB
AF, HF or IF
ITA-5
Group II (2
6 7 8 5
962 992 1022 1082
WAVECOM Decoders v6.15 W40PC, W41PC, W51PC
nd
Tone)
5 6 7 8
880 907 933 960
nd
Tone)
6 7 8
1112 1142 1172