Here are a few notes and articles about Ham Radio stuff, with the main focus on Digital Voice modes, in particular — but not exclusively — D-Star.
Please check my posts listed on the right under Recent Posts and Archives.
Artwork by Philip “Gil” Gildersleeve, W1CJD. His cartoons adorned QST for many years. I encourage you to get “GIL – A Collection of Classic Cartoons from QST“.