Ian Waugh - A Mariner\'s Guide to Marine Communications

MF/ H F

ship/ shore and shore/slUp

, {

, ,

I

intership

,

\

J \

Figure Z 1 (b) MFIHF Commercial Services

BBC

World Service

(J-H)

Commercial Coast Radio Stations (CRS) may offer MF and/or HF services

including:

Radio Telephone (RT) link calls to homes/ offices around the world.

Telex and/or e-mail messaging services (for private/ business messages and to

Ship Reporting Systems).

You can also use your MF/HF SSB radio for routine intership calls and to

receive broadcast stations (e.g. the BBC World Service and other long-range

national broadcast stations).

The MF IHF SSB radio installation

The main components of a MF IHF SSB radio installation (see
figure 7.2) are:

• The MF IHF transceiver unit, which may be integrated with the main
  control unit or be a separate unit. (May have an additional, remote,
  control head).


• An MF/HF Scanning Watch Receiver (scans your chosen DSC
  Alerting frequencies in turn).


• A DSC Controller (to compose DSC Alerts and to display received
  alerts).


• A handset (for voice calls) and a computer (for NBD P ITelex services)
  
  
  • the computer may be connected to a Local Area Network (LAN).
  
  
  
  

136 THE NAUTICAL INSTITUTE