[RTTY] keyed AFSK? - was: Best RTTY rig?

[Bill Turner]

I wasn't there at the very beginning of carrier-type AFSK, but I suspect
it was because it was the simplest, quickest and easiest way.  Back
then, with tube-type VFOs, stability was always an issue and trying to
get an exact shift and make it consistent would have been difficult for
a lot of hams.  Modulating a carrier with audio tones would have been
simple by comparison, either AM or FM..

Anyone around from those days?  Feel free to jump in.

Bill, W7TI

----- Original Message -----
From: "WA9ALS - John" <wa9als@starband.net>

Bill, why was this done?  I suppose it was more copyable than voice
under
certain conditions?

Reminds one of using a code practice oscillator on a 2M repeater...