GeneralG8C16

Which of the following provide digital voice modes?

D
Answer
Signals and emissions
Type
A
WSPR, MFSK16, and EasyPAL
B
FT8, FT4, and FST4
C
Winlink, PACTOR II, and PACTOR III
D
DMR, D-STAR, and SystemFusion

Answer Notes

DMR (Digital Mobile Radio), D-STAR (Digital Smart Technologies for Amateur Radio), and Yaesu's System Fusion are all popular digital voice protocols used in amateur radio. They use a vocoder to encode the operator's voice into a digital data stream before transmission, providing clear audio and routing capabilities. The incorrect options feature modes designed strictly for data, text, or image transmission. For example, WSPR, FT8, and FT4 are weak-signal digital data modes used for automated contacts or propagation spotting. Similarly, Winlink and PACTOR are used for sending emails over radio, and EasyPAL is used for digital images. None of these transmit real-time digitized human voice.
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