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Data & Text Mode digital Radio

Posted: 23 Feb 2020 03:58 PM PST
https://vu2nsb.com/cw-digital-radio/...-digital-radio

Data Text mode Digital Radio Communication Data and Text mode digital
radio communication has matured over the decades and now forms an important
aspect not only of professional and commercial radio but is also an
integral part of amateur radio. Radio amateurs have been in the forefront
of the process of experimentation, development, and validation of
workability and reliability of many of the digital communication modes that
are in vogue today. The earliest text mode digital radio communication
protocol that was used for effective long-distance radio communication of
text messages was Radio-Teletype (RTTY). This was a straightforward and
very basic mode that used binary FSK over a narrow baseband and was
essentially an extension of cable teletype. However, even though there has
been rapid evolution that brought in scores of new, more reliable,
efficient, and robust protocols, RTTY still remains firmly entrenched to
date. Whereas, with the advent of advanced technologies and computer
algorithms and with the passage of time, several digital modes that came
into being at one time often fell by the side only to be replaced... Click
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