In article et, robert casey
writes:

Besides, if something is digital, why would you have to try so hard to
make it computer compatible?


Telling "S" from "O" is hard if you don't already
know from looking at other characters what the speed
must be.

No, it's easy.

"S" is one time unit on, one time unit off, one time unit on, one time unit
off, one time unit on. Then at least three time units off.

"O" is three time units on, one time unit off, three time units on, one time
unit off, three time units on. Then at least three time units off.

The only true ambiguity is between "E" and "T" sent all by themselves. Unless
you know the speed from some other source, there's no way to tell them apart.

Something easy for the brain but hard for
computers to do when the sender varies his speed.

Naw, just requires a bit more software.

73 de Jim, N2EY