Digimodes

I am qrv many digimodes like VarAC or JS8 etc.  In 1993 I wrote my first book "Handbuch Kurzwellen-Funkfernschreiben" (in english: Handbook of Shortwave Radioteletyping). In the next years more and more new digital modes were born. I try to use all of them and so in 2008 the second book "Teletype Digimodes", also published by the Beam-Verlag in german language, was available. The second issue of the book was published in 2015.