Equipment. Description; Ssb Radiotelephone; Mf/Hf Dsc Terminal / Nbdp Terminal; Inmarsat-C Mobile Earth Station / Ac/Dc Power Supply - Furuno RC-1800T Operator's Manual

1.3 Equipment Description
Regulations require that all equipment be powered while the vessel is underway.

SSB Radiotelephone

For ship-ship and ship-station radio communications in the MF/HF band (1.6-26.175 MHz),
the main communications modes are;
• Voice communications (J3E) via the handset
• DSC communications (Telex:J2B) by the MF/HF DSC terminal
• Telex communications by the NBDP terminal (J2B)
DSC and NBDP functions may or may not be incorporated in the SSB radiotelephone depinding
on radiotelephone used.
MF/HF DSC Terminal
DSC function is incorporated in SSB Radiotelephone. However DSC terminal may also carry
the DSC function.
The MF/HF DSC Terminal has many functions. Below are its main functions.
• Distress alert: Transmit the distress alert via the SSB Radiotelephone.
• Watches DSC distress and safety frequencies. The MF/HF DSC Terminal receives distress
alert from vessel in distress and all ships call (safety and urgent call) from ship or coast
station.
• All Ships Call: For urgent situation on own ship (for example, request for medical assis-
tance).
• Individual Call: Place a call to a specific ship or coast station.
NBDP Terminal
NBDP function is incorporated in the SSB radiotelephone. However, NBDP terminal may
also carry the NBDP function.
The NBDP Terminal provides Telex communications with coast stations over the MF/HF
band via the SSB Radiotelephone. Furthermore, it can receive MSI (Maritime Safety Infor-
mation) messages via the SSB Radiotelephone (Scan reception).
Note) NBDP Terminal is not incorporated in the dual Inmarsat C type radio rack console.
Inmarsat-C Mobile Earth Station
Provides distress and general Telex communications for mobile and fixed terrestrial subscrib-
ers in the Inmarsat-C communications network. Telex messages are processed by what is known
as store-and-forward Telex. A Telex message transmitted by you arrives at a coast station where
it is stored temporarily and then delivered to the subscriber specified. (Full duplex communica-
tions are not possible.)
AC/DC Power Supply
The AC/DC Power Supply consists of a battery charger and two rectifiers (PR-850AR and PR-
300) which can accept both AC and DC powers (RC-1800F only). For RC-1800T the AC/DC
Power Supply is installed externally. In the event of main AC power failure, auxiliary power
(battery) provides power to the equipment, for the amount of time stipulated by radio regula-
tions.
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