Wavecom W61PC V7.5.0 - Manual (Page 165)

WAVECOM Decoder W61PC/LAN Manual V7.5 Transmission Modes  155
FMS-BOS Settings
To apply or manipulate the various FMS-BOS stations select Options/FM-BOS Settings…
A table of FMS-BOS users is stored in \config\FmsbosSettings.xml
GMDSS/DSC-HF
GMDSS (Global Maritime Distress and Safety System) is a worldwide system for handling maritime emer-
gency and safety transmissions. Part of the system is DSC (Digital Selective Calling). Each user of the
GMDSS is assigned a nine-digit number (MMSI – Maritime Mobile Service Identity) from the mobile mari-
time service. 3 digits of this number are used as a country code.
Parameter Value
Frequency range HF
Operation modes Broadcast/Simplex
Modulation FSK
Symbol rate 100.0 Bd
Shift 170 Hz
Receiver settings DATA, CW, LSB or USB
Input format(s) AF, IF
Additional Info ITA-5
DSC is used on HF and VHF. On HF the system is working with 100 baud and a shift of 170 Hz.
Selecting Options/Display offers the option of an ASCII or RAW bits display.
The complex structures of the DSC are described in detail in the ITU-Rec. M.493-11.
GMDSS/DSC-VHF
GMDSS (Global Maritime Distress and Safety System) is a worldwide system for handling maritime emer-
gency and safety transmissions. Part of the system is the DSC (Digital Selective Calling).
Each user of the GMDSS is assigned a nine-digit number (MMSI – Maritime Mobile Service Identity) from
the mobile maritime service. 3 digits of this number are used as a country code.
Parameter Value
Frequency range VHF/UHF
Operation modes Broadcast/Simplex