A way to convert the analogue voice signal detected by a microphone or other analogue audio source into a digital bit stream (known as the Analogue to Digital converter – driven by an algorithm known as a Codec).What does it take therefore to transmit digital voice? There are several common core elements to any digital voice system. In time, HF narrow-band digital voice may achieve this too, although for now it is only just starting to approach the same signal to noise capabilities of SSB. Some digital text based modes are so advanced that they are enabling communications over radio channels that voice or even CW would be unintelligible over. Why not? Many facets of Amateur Radio are making the transition from analogue to digital modes.
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