I recently completed a talk at LEFARS on data modes for all occasions, the aim of the talk was to explore alternative data modes. We have all received the very popular PSK, most likely on 14.070 but many other data modes exist some offering much greater reliability and alternative uses.
The slides will hopefully get you thinking about other data modes and some of their advantages and disadvantages, how to identify them and what programs to try.
One such free program HRD can be found online, although if you want support for modern radios and bug fixes why not use the try before you buy option on the paid HRD website.
You can download the slides data modes for all occasions.pptx (1)
73 Dave M0TAZ