Digital modes are becoming more and more popular on the amateur bands. This is mainly due to the following reason: Affordable home PC’s with built in soundcards. This has brought forth a multitude of decoding software, some free, others not. There are new modes being invented all the time and keeping track of these is turning into a full time job! One of the main problems encountered by the newcomer to digital modes (or digimodes as they are known) is how to identify what they are seeing/hearing. Most of the decoding software uses a visual ‘waterfall’ display to facilitate easy tuning. (G4UCJ)
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The web page of G4UCJ is a wonderful overview about almost all of the different types of digital modes.
Learn more about digital amateur radio operations by interesting
Interesting Homepage of AC4M about Digital Modes and appropriate Software...etc..
Read more about the digital "Hype" Mode (FT-8) on my special page for this technique.