Traditionally, the nucleaus of radio installations on bord large ships has been essential safety equipment, but on modern ships it may represent only one fifth of total radiocommunication equipment. Specialised radio services now include such items as the transmission of weather reports and daily newspapers. Although integrated systems employing high-reliability solid-state devices are being increasingly used, the rugged valve is still more economical at medium and high radio-frequency powers.
Progress in marine radiocommunication
Electronics and Power ; 16 , 6 ; 210-216
1970
7 Seiten, 8 Bilder
Article (Journal)
German
Digital selective calling for marine radiocommunication
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