Most of my radio communications use a text mode called PSK-31. It’s popular and survives a lot of interference, but fast it isn’t. I tested sending 1000 random characters, and it took 5′ 33″. That’s about this speed:
Because the mode is so slow, I prefer to keep my transmissions and macros short, stopping just shy of Morse’s telegraphically incomprehensible VY FB CPY OM. My heart sinks when I’m in a QSO, and I see the beginning of a huge piece of macro text being fired at me. A one-way long conversation (like the dude who sent the entire wikipedia article about his hometown) isn’t a ragchew, it’s a barrage. If someone started wittering on at you for 15 minutes without a chance for you to say anything, no-one would want to talk to them. So please, check your macros, think before you type, and we’ll have more and more pleasant contacts.