General Principles of Narrow Band Direct Printing (NBDP) and Telex Ove

Chapter

ABSTRACT

Note: Narrow Band Direct Printing (NBDP) telegraphy is a means of communication whereby a printed or hard' copy is available at each communications terminal. NBDP is also known as radiotelex, and is used for NAVTEX broadcasts.

General Principles of Narrow Band Direct Printing (NBDP) and Telex Over Radio (TOR) systems. Ability to Use Maritime NBDP and TOR Equipment in Practice

ABSTRACT