On Thu, 20 Jul 2006 12:01:06 GMT, Cecil Moore
wrote:

In that case the AM carrier is the BFO for the CW signal.
How many SWL's are going to accidentally "detune it right"
for the purpose of hearing an SOS?

You can hear the change in noise as a carrier goes on and off. It's
extremely difficult to copy high speed CW like that if the signal is
strong, but a weak signal or slower CW is just as easy to copy as
noise as it is to copy as a pure tone. T1 doesn't mean uncopyable, it
just means ragged tone.