Wavecom W74PC User Manual

WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V9.1.0 Transmission Modes

183
Designation
Frequency (Hz)
Designation
Frequency (Hz)
RED "H"
645.7
RED "S"
1479.1
LINK-11 (CLEW)
Link-11 (CLEW: Conventional Link Eleven Waveform), also known as TADIL-A, is a transmission mode
mostly in HF band, to run a tactical digital information network. This mode is specified by the US Depart-
ment of Defense (DoD) in MIL-STD-188-203-1A (8
th
January 1988).
Parameter
Value
Frequency range
HF
Operation modes
Multi-carrier, DQPSK
Symbol rate
75 Bd or 45.45 Bd
Modulation
16-tone, DQPSK
Receiver settings
USB
Shift/Bandwidth
2310 Hz
Center
1650 Hz
Receiver settings
DATA, CW, LSB or USB
Input format(s)
AF, IF
This mode has 16 carriers: one Doppler tone at 605 Hz; 14 data carriers starting at 935 Hz with tone dis-
tance of 110 Hz and the 16
th
carrier at 2915 Hz is used for data and synchronization, see table below. Ex-
cept the Doppler tone, other carriers are DQPSK, modulated at the symbol rate of 75 or 45.45 Baud.
Number
Frequency (Hz)
Description
Bit location
1
605
Doppler
-
2
935
Data
0 and 1
3
1045
Data
2 and 3
4
1155
Data
4 and 5
5
1265
Data
6 and 7
6
1375
Data
8 and 9
7
1485
Data
10 and 11
8
1595
Data
12 and 13
9
1705
Data
14 and 15
10
1815
Data
16 and 17
11
1925
Data
18 and 19
12
2035
Data
20 and 21
13
2145
Data
22 and 23
14
2255
Data
24 and 25
15
2365
Data
26 and 27
16
2915
Data / Sync
28 and 29
There are 5 frame formats:
 DNCS IM: Data Net Control Station Interrogation Message

Wavecom W74PC Specifications

General

Brand	Wavecom
Model	W74PC
Category	Media Converter
Language	English